What is a PRP ?
A PRP is a probable prime number, a number that nobody knows how to prove
or disprove its primality.
Here are some criterions that can be used to recognize these numbers
:
- N does not have any prime factor up to 2^32.
- N cannot be trivially written into a product.
- Take 3 square-free consecutive bases such that (b1/N)=(b2/N)=(b3/N)= -1. N
should be such that b1^((N-1)/2)=b2^((N-1)/2)=b3^((N-1)/2)= -1 (mod N).
- Take a prime base such that (b/N)= -1 and b<>b1<>b2<>b3.
N should pass the strong test in base b.
- or more (if someone has got an idea) !!!
Submit your PRPs
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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
4501 | (856*10^137633-1)/9 | 137635 | Robert Price | 03/2020 |
4502 | 36232^6289+6289^36232 | 137631 | Hans Havermann | 05/2021 |
4503 | 2^457120-21575 | 137607 | Enzo Doria | 07/2013 |
4504 | (11*2^456978+1)/15 | 137564 | Lelio R Paula | 07/2015 |
4505 | 30963^27722+27722^30963 | 137564 | Hans Havermann | 04/2021 |
4506 | 33722^12003+12003^33722 | 137562 | Hans Havermann | 06/2021 |
4507 | (7*25^98399+10613)/12 | 137556 | Curtis Bright | 05/2015 |
4508 | 41901^1918+1918^41901 | 137555 | Hans Havermann | 06/2021 |
4509 | (7*10^137551-1)/3 | 137552 | Robert Price | 08/2022 |
4510 | 32930^15021+15021^32930 | 137539 | Hans Havermann | 05/2021 |
4511 | 31178^25785+25785^31178 | 137538 | Hans Havermann | 05/2021 |
4512 | 419^52446+52446^419 | 137525 | Norbert Schneider | 11/2020 |
4513 | 2^456813+214175 | 137515 | Enzo Doria | 10/2023 |
4514 | 2^456796-113513 | 137510 | Enzo Doria | 08/2014 |
4515 | 31788^21137+21137^31788 | 137485 | Hans Havermann | 04/2021 |
4516 | (7*2^456655+1)/39 | 137467 | Lelio R Paula | 07/2015 |
4517 | 27151^31004-31004^27151 | 137466 | Frank Doornink | 01/2024 |
4518 | 2^456503-114361 | 137422 | Enzo Doria | 01/2015 |
4519 | (11*2^456387+1)/19 | 137386 | Lelio R Paula | 07/2015 |
4520 | 30618^30618-5^5 | 137352 | Serge Batalov | 04/2024 |
4521 | 36248^6147+6147^36248 | 137332 | Hans Havermann | 05/2021 |
4522 | 31986^19651+19651^31986 | 137329 | Hans Havermann | 05/2021 |
4523 | 2^456167+22313 | 137320 | Enzo Doria | 09/2023 |
4524 | 31817^20656+20656^31817 | 137292 | Hans Havermann | 05/2021 |
4525 | (71*10^137250+1)/9 | 137251 | Serge Batalov | 05/2010 |
4526 | 2^455922+76249 | 137247 | Enzo Doria | 05/2016 |
4527 | 31310^24171+24171^31310 | 137241 | Hans Havermann | 05/2021 |
4528 | 14^119741-119741^14 | 137239 | Serge Batalov | 04/2016 |
4529 | 35014^8297+8297^35014 | 137218 | Hans Havermann | 05/2021 |
4530 | (19*2^455760+1)/3455 | 137196 | Lelio R Paula | 07/2015 |
4532 | 124^(2^16)+57^(2^16) | 137195 | Valeryi Kuryshev | 02/2011 |
4531 | 124^65536+57^65536 | 137195 | Serge Batalov | 03/2018 |
4533 | 2^455689+72677 | 137177 | Enzo Doria | 04/2016 |
4534 | (17948!)^2+Prime(17948) | 137118 | Robert Price | 08/2014 |
4535 | 31287^24128+24128^31287 | 137116 | Hans Havermann | 05/2021 |
4536 | (37^87421-1)/36 | 137093 | Robert Price | 03/2012 |
4537 | 36233^6070+6070^36233 | 137077 | Hans Havermann | 05/2021 |
4538 | (8*10^137073-17)/9 | 137073 | Serge Batalov | 11/2022 |
4539 | 38418^3697+3697^38418 | 137070 | Hans Havermann | 04/2021 |
4540 | 2^455323-57 | 137066 | Lelio R Paula | 09/2017 |
4541 | (56*10^137019+583)/9 | 137020 | Robert Price | 08/2021 |
4542 | 25017^31148-31148^25017 | 136997 | Frank Doornink | 12/2023 |
4543 | (73*17^111333-9)/16 | 136991 | Curtis Bright | 05/2015 |
4544 | 2^455025-112723 | 136977 | Enzo Doria | 06/2014 |
4545 | 33876^11039+11039^33876 | 136959 | Hans Havermann | 05/2021 |
4546 | (19860^32041-1)/(19860^179-1) | 136943 | Ryan Propper | 11/2023 |
4547 | (251^57059-1)/250 | 136921 | Anonymous | 04/2024 |
4548 | 35142^7873+7873^35142 | 136919 | Hans Havermann | 05/2021 |
4549 | (4997*31^91805-1)/2 | 136918 | Eric Chen | 05/2024 |
4550 | 66*10^136894+7 | 136896 | Robert Price | 07/2020 |
4551 | 28766^30697-30697^28766 | 136875 | Frank Doornink | 05/2024 |
4552 | 2^454675-1777 | 136871 | Yves Minet | 10/2011 |
4553 | 31676^20931+20931^31676 | 136866 | Hans Havermann | 05/2021 |
4554 | 3*10^136829+29 | 136830 | Robert Price | 05/2018 |
4555 | 4*10^136813-57 | 136814 | Robert Price | 10/2018 |
4556 | (6092*28^94536-143)/9 | 136812 | Curtis Bright | 05/2015 |
4557 | fibonacci(654572)-2 | 136798 | Jon Grantham | 08/2023 |
4558 | 37359^4588+4588^37359 | 136795 | Hans Havermann | 05/2021 |
4559 | 2^454348-53 | 136773 | Lelio R Paula | 09/2017 |
4560 | 31^91680-2 | 136729 | Lelio R Paula | 05/2017 |
4561 | 2^454199-113697 | 136728 | Enzo Doria | 09/2014 |
4562 | 30785^27622+27622^30785 | 136725 | Hans Havermann | 05/2021 |
4563 | 32973^14014+14014^32973 | 136725 | Hans Havermann | 05/2021 |
4565 | 7*10^136716+69 | 136717 | Robert Price | 07/2019 |
4564 | 36002^6273+6273^36002 | 136717 | Hans Havermann | 05/2021 |
4566 | 6*10^136692+53 | 136693 | Robert Price | 05/2020 |
4567 | (13*10^136687+47)/3 | 136688 | Robert Price | 10/2018 |
4568 | 2^453935-2791357 | 136649 | Enzo Doria | 01/2016 |
4569 | 2^453906-69131 | 136640 | Enzo Doria | 11/2015 |
4570 | 33232^12915+12915^33232 | 136620 | Hans Havermann | 05/2021 |
4571 | 2^453791+1873913 | 136605 | Enzo Doria | 06/2016 |
4572 | 34166^9951+9951^34166 | 136592 | Hans Havermann | 05/2021 |
4573 | (21*2^453740-1)/2735 | 136588 | Lelio R Paula | 07/2015 |
4574 | 31102^24635+24635^31102 | 136587 | Hans Havermann | 05/2021 |
4575 | 580^49413+49413^580 | 136550 | Norbert Schneider | 02/2019 |
4576 | 2^453503-2788297 | 136519 | Enzo Doria | 11/2015 |
4577 | 34989^7958+7958^34989 | 136486 | Hans Havermann | 12/2020 |
4578 | (2*10^136484+187)/9 | 136484 | Robert Price | 06/2022 |
4579 | 31007^25158+25158^31007 | 136452 | Hans Havermann | 11/2020 |
4580 | 2^453267-113827 | 136447 | Enzo Doria | 09/2014 |
4581 | 32234^17085+17085^32234 | 136435 | Hans Havermann | 12/2020 |
4582 | 2^453102+1877629 | 136398 | Enzo Doria | 08/2016 |
4583 | 31016^24981+24981^31016 | 136397 | Hans Havermann | 12/2020 |
4584 | (62*10^136384-791)/9 | 136385 | Robert Price | 06/2019 |
4585 | 34171^9798+9798^34171 | 136382 | Hans Havermann | 12/2020 |
4586 | (17*10^136354-113)/3 | 136355 | Robert Price | 06/2021 |
4587 | 32756^14541+14541^32756 | 136350 | Hans Havermann | 11/2020 |
4588 | 32205^17086+17086^32205 | 136313 | Hans Havermann | 12/2020 |
4589 | (25*10^136303+161)/3 | 136304 | Robert Price | 09/2019 |
4590 | 35337^7196+7196^35337 | 136299 | Hans Havermann | 12/2020 |
4591 | (182*10^136291+1)/3 | 136293 | Robert Price | 02/2020 |
4592 | (88*10^136234+83)/9 | 136235 | Robert Price | 03/2022 |
4593 | 23*10^136225-7 | 136227 | Robert Price | 02/2020 |
4594 | L(651821) | 136223 | Henri Lifchitz | 09/2008 |
4595 | 25519^30908-30908^25519 | 136208 | Frank Doornink | 02/2024 |
4596 | 2^452460+77701 | 136205 | Enzo Doria | 05/2016 |
4597 | 2^452440-114755 | 136199 | Enzo Doria | 04/2015 |
4598 | 28625^30558-30558^28625 | 136190 | Frank Doornink | 05/2024 |
4599 | 32286^16489+16489^32286 | 136157 | Hans Havermann | 11/2020 |
4600 | (47*10^136141+493)/9 | 136142 | Robert Price | 03/2019 |
4601 | 27140^30699-30699^27140 | 136108 | Frank Doornink | 01/2024 |
4602 | 40392^2339+2339^40392 | 136082 | Hans Havermann | 12/2020 |
4603 | 2*10^136057-43 | 136058 | Robert Price | 04/2018 |
4604 | 2^451971+21563 | 136057 | Enzo Doria | 08/2023 |
4605 | (2^451956-5)/181 | 136051 | Lelio R Paula | 07/2015 |
4606 | 2^451947-22165 | 136050 | Enzo Doria | 07/2013 |
4607 | 2^451787-21805 | 136002 | Enzo Doria | 07/2013 |
4608 | 2^451734-112817 | 135986 | Enzo Doria | 06/2014 |
4609 | (11*2^451714+1)/75 | 135979 | Lelio R Paula | 07/2015 |
4610 | 2^451705-21879 | 135977 | Enzo Doria | 07/2013 |
4611 | (4666^37249-1)/(4666^193-1) | 135957 | Ryan Propper | 11/2023 |
4612 | 2^451560-112349 | 135934 | Enzo Doria | 06/2014 |
4613 | 2^451530+45 | 135925 | Lelio R Paula | 08/2017 |
4614 | 26594^30719-30719^26594 | 135925 | Frank Doornink | 03/2024 |
4615 | 31622^19875+19875^31622 | 135922 | Hans Havermann | 11/2020 |
4616 | (25*10^135906-73)/3 | 135907 | Robert Price | 09/2019 |
4617 | 2^451450-21743 | 135900 | Enzo Doria | 07/2013 |
4618 | (7*10^135879+11)/9 | 135879 | Tyler Busby | 01/2023 |
4619 | 35218^7199+7199^35218 | 135846 | Hans Havermann | 11/2020 |
4620 | 35661^6446+6446^35661 | 135844 | Hans Havermann | 11/2020 |
4621 | (7*33^89453-4743239)/32 | 135835 | Eric Chen | 12/2023 |
4622 | 31869^18248+18248^31869 | 135801 | Hans Havermann | 12/2020 |
4623 | (77*10^135789+157)/9 | 135790 | Robert Price | 05/2022 |
4624 | 2^450958+60529 | 135752 | Enzo Doria | 08/2023 |
4625 | 2^450805+65 | 135706 | Lelio R Paula | 08/2017 |
4626 | 10^135669+21 | 135670 | Boyan Hu | 12/2024 |
4627 | 30761^25728+25728^30761 | 135669 | Hans Havermann | 12/2020 |
4628 | 2*10^135663+69 | 135664 | Robert Price | 06/2020 |
4629 | 33962^9867+9867^33962 | 135651 | Hans Havermann | 11/2020 |
4630 | 34474^8605+8605^34474 | 135647 | Hans Havermann | 11/2020 |
4631 | 34501^8508+8508^34501 | 135583 | Hans Havermann | 12/2020 |
4632 | 35487^6614+6614^35487 | 135577 | Hans Havermann | 12/2020 |
4633 | (13725^32768+1)/131074 | 135573 | Lelio R Paula | 03/2012 |
4634 | (313007#+121876)/(2*30469*424867) | 135559 | Makoto Morimoto | 08/2020 |
4635 | (5^193939+1)/6 | 135557 | Paul Bourdelais | 12/2008 |
4636 | (76*10^135553-49)/9 | 135554 | Robert Price | 07/2022 |
4637 | 5*3^284077+2^284077 | 135540 | Jon Grantham | 08/2023 |
4638 | (844*10^135527-7)/9 | 135529 | Robert Price | 05/2021 |
4639 | 27191^30560-30560^27191 | 135517 | Frank Doornink | 01/2024 |
4640 | 40387^2260+2260^40387 | 135463 | Hans Havermann | 12/2020 |
4641 | 2^449944-113247 | 135447 | Enzo Doria | 07/2014 |
4642 | 2^449770-113247 | 135395 | Enzo Doria | 07/2014 |
4643 | 2^449637-21471 | 135355 | Enzo Doria | 07/2013 |
4644 | 26061^30650-30650^26061 | 135351 | Frank Doornink | 03/2024 |
4645 | 2^449571-75 | 135335 | Lelio R Paula | 08/2017 |
4646 | (14*10^135301-53)/3 | 135302 | Robert Price | 12/2018 |
4647 | (3*2^449494+1)/61340334013 | 135301 | Lelio R Paula | 07/2015 |
4648 | (13*10^135279+437)/9 | 135280 | Robert Price | 04/2018 |
4649 | 2^449330-35 | 135262 | Lelio R Paula | 08/2017 |
4650 | (19*2^449325+1)/9 | 135261 | Lelio R Paula | 07/2015 |
4651 | (2709^39601+1)/(2709^199+1) | 135260 | Martin Hopf | 12/2023 |
4652 | (13*10^135184-43)/3 | 135185 | Robert Price | 11/2018 |
4653 | 2^449049-115309 | 135178 | Enzo Doria | 07/2015 |
4654 | (10^135174+191)/3 | 135174 | Robert Price | 02/2018 |
4655 | 2^449030-15 | 135172 | Lelio R Paula | 08/2017 |
4656 | (157*10^135151-1)/3 | 135153 | Robert Price | 01/2022 |
4657 | (2^448966+100280245065) | 135153 | Paul Bourdelais | 05/2022 |
4658 | (27*2^448936-1)/11 | 135144 | Lelio R Paula | 07/2015 |
4659 | (37*10^135099+251)/9 | 135100 | Robert Price | 09/2021 |
4660 | 32221^15586+15586^32221 | 135095 | Hans Havermann | 12/2020 |
4661 | 2^448762-351401 | 135091 | Enzo Doria | 07/2015 |
4662 | 2*10^135083-43 | 135084 | Robert Price | 04/2018 |
4663 | 31357^20278+20278^31357 | 135056 | Hans Havermann | 12/2020 |
4664 | 32242^15445+15445^32242 | 135055 | Hans Havermann | 12/2020 |
4665 | k(198476) | 135054 | Robert Price | 07/2020 |
4666 | 32461^14470+14470^32461 | 135053 | Hans Havermann | 12/2020 |
4667 | 31353^20288+20288^31353 | 135045 | Hans Havermann | 12/2020 |
4668 | 5*10^135019+77 | 135020 | Robert Price | 12/2018 |
4669 | (10^135011+719)/9 | 135011 | Serge Batalov | 12/2014 |
4670 | (197*10^134978+7)/3 | 134980 | Robert Price | 12/2020 |
4671 | 2^448386-2786261 | 134978 | Enzo Doria | 03/2016 |
4672 | 26480^30517-30517^26480 | 134975 | Frank Doornink | 03/2024 |
4673 | (73*10^134939+143)/9 | 134940 | Robert Price | 07/2019 |
4674 | 33957^9392+9392^33957 | 134903 | Hans Havermann | 12/2020 |
4675 | 2^448122+20809 | 134899 | Enzo Doria | 08/2023 |
4676 | 2^448113-113949 | 134896 | Enzo Doria | 11/2014 |
4677 | 30958^22755+22755^30958 | 134887 | Hans Havermann | 12/2020 |
4678 | 2^447888-2786639 | 134828 | Enzo Doria | 03/2016 |
4679 | 2^447870-396765 | 134823 | Enzo Doria | 07/2013 |
4680 | 10^(2*67404+1)-10^67404-1 | 134809 | Robert Price | 07/2023 |
4681 | 2^447766-21791 | 134791 | Enzo Doria | 07/2013 |
4682 | (19*10^134786-49)/3 | 134787 | Robert Price | 05/2019 |
4683 | Phi(202173,10)/10064306514895399941409 | 134758 | Makoto Kamada | 05/2019 |
4684 | (23*2^447647+1)/155 | 134755 | Lelio R Paula | 07/2015 |
4685 | 2^447552-1019 | 134727 | Yves Minet | 02/2014 |
4686 | (2*10^134720-41)/3 | 134720 | Robert Price | 02/2018 |
4687 | (25*10^134695-97)/9 | 134696 | Robert Price | 01/2022 |
4688 | 2^447437-113569 | 134692 | Enzo Doria | 08/2014 |
4689 | 2^447426-65 | 134689 | Lelio R Paula | 08/2017 |
4690 | 2^447357-2797573 | 134668 | Enzo Doria | 04/2016 |
4691 | 2^447278+93 | 134645 | Lelio R Paula | 08/2017 |
4692 | 33193^11370+11370^33193 | 134623 | Hans Havermann | 12/2020 |
4693 | 30736^23979+23979^30736 | 134619 | Hans Havermann | 11/2020 |
4694 | 2^447094-113193 | 134589 | Enzo Doria | 07/2014 |
4695 | 3^282041-9934 | 134568 | Enzo Doria | 05/2014 |
4696 | 2^447019-109039 | 134567 | Enzo Doria | 04/2014 |
4697 | 31376^19437+19437^31376 | 134561 | Hans Havermann | 12/2020 |
4698 | 2^446990-22041 | 134558 | Enzo Doria | 07/2013 |
4699 | 123^64370+122 | 134528 | Karsten Bonath | 04/2018 |
4700 | 30100^29461+29461^30100 | 134525 | Hans Havermann | 11/2020 |
4701 | 31251^20158+20158^31251 | 134519 | Hans Havermann | 11/2020 |
4702 | 2^446782-39701 | 134495 | Enzo Doria | 09/2015 |
4703 | 31817^16858+16858^31817 | 134485 | Hans Havermann | 12/2020 |
4704 | 32448^13937+13937^32448 | 134471 | Hans Havermann | 12/2020 |
4705 | 5^192321+3^192321-1 | 134427 | Jon Grantham | 08/2023 |
4706 | 2^446494-16485 | 134409 | Enzo Doria | 04/2013 |
4707 | 30042^29785+29785^30042 | 134408 | Hans Havermann | 12/2020 |
4708 | 29504^30069-30069^29504 | 134405 | Norbert Schneider | 12/2014 |
4709 | 2^446441+65 | 134393 | Lelio R Paula | 08/2017 |
4710 | (10^134385+719)/9 | 134385 | Serge Batalov | 12/2014 |
4711 | 30043^29688+29688^30043 | 134370 | Hans Havermann | 12/2020 |
4712 | (2*10^134364+529)/9 | 134364 | Robert Price | 01/2018 |
4713 | 34657^7512+7512^34657 | 134323 | Hans Havermann | 11/2020 |
4714 | (13*2^446187-1)/661 | 134314 | Lelio R Paula | 07/2015 |
4715 | 5^192103+3^192103+2^192103+1 | 134275 | Matthias Baur | 12/2019 |
4716 | 42035^1564+1564^42035 | 134270 | Hans Havermann | 12/2020 |
4718 | (2^446022-7)/339 | 134264 | Lelio R Paula | 07/2015 |
4717 | 30621^24248+24248^30621 | 134264 | Hans Havermann | 12/2020 |
4719 | 30341^26562+26562^30341 | 134237 | Hans Havermann | 11/2020 |
4720 | (189^58967-1)/188 | 134234 | Anonymous | 06/2024 |
4721 | 10^134209+99867 | 134210 | Patrick De Geest | 05/2021 |
4722 | 10^134209-80000001 | 134209 | Robert Price | 04/2021 |
4723 | 10^134209-323283 | 134209 | Patrick De Geest | 05/2021 |
4724 | 29976^29953+29953^29976 | 134186 | Hans Havermann | 12/2020 |
4725 | 35038^6755+6755^35038 | 134183 | Hans Havermann | 12/2020 |
4726 | 63^74568+2 | 134174 | Lelio R Paula | 06/2017 |
4727 | 2^445671-22071 | 134161 | Enzo Doria | 07/2013 |
4728 | 532^49205+49205^532 | 134129 | Norbert Schneider | 02/2019 |
4729 | 36453^4780+4780^36453 | 134127 | Hans Havermann | 04/2021 |
4730 | (28*10^134122-1)/9 | 134123 | Serge Batalov | 10/2014 |
4731 | 2^445515-113859 | 134114 | Enzo Doria | 10/2014 |
4733 | (22*10^134111-37)/3 | 134112 | Robert Price | 04/2019 |
4732 | 31083^20636+20636^31083 | 134112 | Hans Havermann | 04/2021 |
4734 | 3*2^445478+5 | 134103 | Jon Grantham | 07/2023 |
4735 | 31622^17379+17379^31622 | 134079 | Hans Havermann | 04/2021 |
4736 | 5*2^445380-3 | 134074 | Jon Grantham | 07/2023 |
4737 | (6*32^89076+4241)/31 | 134073 | Eric Chen | 11/2023 |
4738 | (277*10^134059-7)/9 | 134061 | Robert Price | 02/2022 |
4739 | 2^445328-216917 | 134058 | Enzo Doria | 05/2014 |
4740 | 2^445202+1874899 | 134020 | Enzo Doria | 06/2016 |
4741 | 5^191739-3^191739-1 | 134020 | Jon Grantham | 08/2023 |
4742 | (35*10^134003-89)/9 | 134004 | Robert Price | 02/2022 |
4743 | (13*2^445102+1)/17 | 133989 | Lelio R Paula | 07/2015 |
4744 | (35*10^133979-593)/9 | 133980 | Robert Price | 07/2018 |
4745 | 2*10^133955+51 | 133956 | Robert Price | 05/2018 |
4746 | (49*10^133952+437)/9 | 133953 | Robert Price | 09/2021 |
4747 | 2^444964-113639 | 133948 | Enzo Doria | 08/2014 |
4748 | 31811^16240+16240^31811 | 133943 | Hans Havermann | 04/2021 |
4749 | 10^133902+167841 | 133903 | Patrick De Geest | 05/2021 |
4750 | 10^133902-100001 | 133902 | Robert Price | 07/2020 |