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) !!!
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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
6751 | 9*6^141303+7 | 109957 | Lelio R Paula | 11/2014 |
6752 | 27635^9522+9522^27635 | 109953 | Hans Havermann | 11/2020 |
6753 | 78^58099+77 | 109929 | Norbert Schneider | 02/2015 |
6754 | 2*10^109928-7 | 109929 | Robert Price | 10/2015 |
6755 | 30580^3933+3933^30580 | 109927 | Hans Havermann | 11/2020 |
6756 | 26380^14689+14689^26380 | 109926 | Hans Havermann | 11/2020 |
6757 | (2^365161+1130)/2 | 109925 | Stefano Morozzi | 09/2020 |
6758 | (27*2^365137-1)/2021 | 109916 | Lelio R Paula | 03/2014 |
6759 | 29^75157-30 | 109910 | Anonymous | 09/2024 |
6760 | (4441*29^75152-24)/7 | 109905 | Curtis Bright | 05/2015 |
6761 | (2^365087+7)/6015 | 109899 | Lelio R Paula | 01/2014 |
6762 | (2^365069+3774)/2 | 109897 | Stefano Morozzi | 02/2021 |
6763 | 29652^5083+5083^29652 | 109894 | Mark Rodenkirch | 10/2020 |
6764 | (2^365049+722)/2 | 109891 | Stefano Morozzi | 09/2020 |
6765 | (35*10^109888-89)/9 | 109889 | Robert Price | 02/2022 |
6766 | 18^87533-11 | 109878 | Lelio R Paula | 04/2017 |
6767 | 2^364982-5 | 109871 | Henri Lifchitz | 04/2006 |
6768 | 3*10^109861+59 | 109862 | Robert Price | 08/2018 |
6769 | 5*10^109860-69 | 109861 | Robert Price | 02/2021 |
6770 | 2^364936-1867979 | 109857 | Enzo Doria | 04/2016 |
6771 | 27013^11652+11652^27013 | 109846 | Hans Havermann | 10/2020 |
6772 | 2^364867-112087 | 109836 | Enzo Doria | 06/2014 |
6773 | 4^182415-85061 | 109825 | Mike Oakes | 06/2011 |
6774 | (2^364809+1034)/2 | 109819 | Stefano Morozzi | 09/2020 |
6775 | 24972^24972-8323^8323 | 109814 | Henri Lifchitz | 10/2024 |
6776 | (53*10^109809-287)/9 | 109810 | Robert Price | 02/2022 |
6777 | (52*10^109807-133)/9 | 109808 | Robert Price | 09/2021 |
6778 | 25708^18675+18675^25708 | 109806 | Hans Havermann | 10/2020 |
6779 | (17^89227+16^89227)/33 | 109788 | Robert Price | 08/2013 |
6780 | 2^364687-187 | 109782 | Lelio R Paula | 01/2012 |
6781 | 2^364644+67 | 109769 | Lelio R Paula | 01/2012 |
6782 | (9787*2^364625-1)/24947 | 109763 | Lelio R Paula | 05/2015 |
6783 | (2^364616+5)/9 | 109760 | Lelio R Paula | 01/2014 |
6784 | (55*10^109759+89)/9 | 109760 | Robert Price | 03/2019 |
6785 | (14*32^72921+4171)/31 | 109757 | Eric Chen | 04/2023 |
6786 | 12^101694+73 | 109747 | Lelio R Paula | 03/2017 |
6787 | 13^98518-66 | 109744 | Lelio R Paula | 03/2017 |
6788 | (35^71069+2^71069)/37 | 109734 | Robert Price | 01/2025 |
6789 | (8*10^109721-269)/9 | 109721 | Robert Price | 09/2021 |
6790 | 2^364478-113261 | 109719 | Enzo Doria | 07/2014 |
6791 | (2^364513+1)/(3*44290516579) | 109719 | Gord Palameta | 08/2018 |
6792 | (24737*2^364454+1)/3 | 109716 | Lelio R Paula | 07/2014 |
6793 | 27814^8777+8777^27814 | 109681 | Hans Havermann | 10/2020 |
6794 | (62*10^109673+1)/9 | 109674 | Serge Batalov | 11/2010 |
6795 | 3^229824+340 | 109654 | Lelio R Paula | 03/2017 |
6796 | (16623*33^72206-8095)/16 | 109649 | Eric Chen | 05/2023 |
6797 | (2*10^109645-71)/3 | 109645 | Robert Price | 12/2017 |
6798 | V(786978) | 109644 | Serge Batalov | 07/2024 |
6799 | 2^364169-112813 | 109626 | Enzo Doria | 06/2014 |
6800 | 28822^6359+6359^28822 | 109622 | Hans Havermann | 11/2020 |
6801 | 10^109615+21 | 109616 | Lelio R Paula | 03/2017 |
6802 | 10^109615-456267 | 109615 | Patrick De Geest | 03/2017 |
6803 | 522^40331-40331^522 | 109607 | Norman Luhn | 09/2024 |
6804 | 2^364094-113 | 109604 | Lelio R Paula | 01/2012 |
6805 | 25251^21898+21898^25251 | 109600 | Hans Havermann | 11/2020 |
6806 | (4^182026+11)/3 | 109591 | Robert Price | 02/2017 |
6807 | 2^364041-6883 | 109588 | Lelio R Paula | 09/2011 |
6808 | 12^101545+11 | 109586 | Lelio R Paula | 03/2017 |
6809 | 26536^13475+13475^26536 | 109582 | Hans Havermann | 11/2020 |
6810 | 2^363842-2787101 | 109528 | Enzo Doria | 03/2016 |
6811 | (2^363812+3570)/2 | 109519 | Stefano Morozzi | 09/2020 |
6812 | (996^36527+1)/997 | 109515 | Jinyuan Wang | 12/2024 |
6813 | (22699*2^363782+1)/763 | 109511 | Lelio R Paula | 07/2014 |
6814 | 2^363769+5711 | 109506 | Lelio R Paula | 04/2017 |
6815 | (31*2^363748+1)/49 | 109499 | Lelio R Paula | 03/2014 |
6816 | 26^77372+25 | 109480 | Anonymous | 09/2024 |
6817 | (2^363670+100280245065) | 109476 | Paul Bourdelais | 05/2022 |
6818 | p(22245)#/2-8 | 109462 | Robert Price | 01/2017 |
6819 | 2^363556+55 | 109442 | Lelio R Paula | 01/2012 |
6820 | (509*10^109414+31)/9 | 109416 | Robert Price | 08/2022 |
6821 | (2^363437+1682)/2 | 109406 | Stefano Morozzi | 09/2020 |
6822 | (55459*2^363411+1)/81 | 109401 | Lelio R Paula | 07/2014 |
6823 | 2^363406+1871569 | 109397 | Enzo Doria | 05/2016 |
6824 | (129^51829-1)/128 | 109388 | Anonymous | 06/2024 |
6825 | (2^363370+1338)/2 | 109385 | Stefano Morozzi | 02/2021 |
6826 | (2^363349+7)/9 | 109378 | Lelio R Paula | 01/2014 |
6827 | (13869^26569-1)/(13869^163-1) | 109375 | Ryan Propper | 11/2023 |
6828 | 3^229236+100 | 109374 | Lelio R Paula | 03/2017 |
6829 | (2^363315+3258)/2 | 109369 | Stefano Morozzi | 02/2021 |
6830 | 2^363268-58695 | 109355 | Lelio R Paula | 04/2017 |
6831 | 2^363191-112321 | 109332 | Enzo Doria | 06/2014 |
6832 | 26231^14718+14718^26231 | 109327 | Hans Havermann | 10/2020 |
6833 | 25461^19672+19672^25461 | 109326 | Hans Havermann | 10/2020 |
6834 | 4*10^109316-63 | 109317 | Robert Price | 10/2018 |
6835 | 2^363120+3 | 109311 | Donovan Johnson | 04/2006 |
6836 | (10^109297-1)/9 | 109297 | Paul Bourdelais, Harvey Dubner | 04/2007 |
6837 | 2^363042-114641 | 109287 | Enzo Doria | 04/2015 |
6838 | 2^363020-112793 | 109280 | Enzo Doria | 06/2014 |
6839 | (8732^27889-1)/(8732^167-1) | 109256 | Ryan Propper | 11/2023 |
6840 | (85*10^109253+203)/9 | 109254 | Robert Price | 09/2020 |
6841 | 24990^23431+23431^24990 | 109202 | Hans Havermann | 10/2020 |
6842 | (2^362746+3738)/2 | 109198 | Stefano Morozzi | 09/2020 |
6843 | (2^362716+1282)/2 | 109189 | Stefano Morozzi | 01/2021 |
6844 | (67607*2^362695+1)/70499 | 109183 | Lelio R Paula | 07/2014 |
6845 | 25060^22737+22737^25060 | 109180 | Hans Havermann | 10/2020 |
6846 | (9*2^362644+1)/5 | 109167 | Lelio R Paula | 03/2014 |
6847 | 5^156181+38 | 109166 | Lelio R Paula | 02/2017 |
6848 | (2^362623+3618)/2 | 109161 | Stefano Morozzi | 09/2020 |
6849 | 25138^21993+21993^25138 | 109157 | Hans Havermann | 10/2020 |
6850 | 4*10^109142+91 | 109143 | Robert Price | 08/2018 |
6851 | 3^228750+68 | 109142 | Lelio R Paula | 03/2017 |
6852 | (2^362561+786)/2 | 109142 | Stefano Morozzi | 09/2020 |
6853 | (23*10^109113+61)/3 | 109114 | Robert Price | 01/2022 |
6854 | 2*10^109100-49 | 109101 | Robert Price | 09/2020 |
6855 | (10223*2^362376+1)/9 | 109090 | Lelio R Paula | 07/2014 |
6856 | 65^60167-64^60167 | 109078 | Robert Price | 08/2013 |
6857 | 7*3^228589-2 | 109066 | Lelio R Paula | 09/2014 |
6858 | 24874^24243+24243^24874 | 109063 | Hans Havermann | 11/2020 |
6859 | (17*10^109059-161)/9 | 109060 | Robert Price | 02/2021 |
6860 | 29158^5495+5495^29158 | 109050 | Hans Havermann | 11/2020 |
6861 | (78557*2^362188+1)/189 | 109033 | Lelio R Paula | 07/2014 |
6862 | 2*7^129008+9 | 109025 | Lelio R Paula | 11/2014 |
6863 | 88*10^109022+7 | 109024 | Robert Price | 03/2020 |
6864 | 28194^7337+7337^28194 | 108985 | Hans Havermann | 10/2020 |
6865 | (5*10^108960+91)/3 | 108961 | Robert Price | 04/2018 |
6866 | 2^361957+76367 | 108960 | Enzo Doria | 05/2016 |
6867 | 2^361873-1411 | 108935 | Yves Minet | 01/2013 |
6868 | (24737*2^361857+1)/35 | 108933 | Lelio R Paula | 07/2014 |
6869 | 216^216^216+91^91^91 | 108917 | Henri Lifchitz | 03/2025 |
6870 | 47^65132-65132^47 | 108908 | Norman Luhn | 09/2024 |
6871 | 115^52842-114 | 108892 | Norbert Schneider | 07/2018 |
6872 | 13^97745-24 | 108883 | Lelio R Paula | 03/2017 |
6873 | (2^361696+2562)/2 | 108882 | Stefano Morozzi | 09/2020 |
6874 | 17^88475+8 | 108864 | Lelio R Paula | 04/2017 |
6875 | 2^361567+51 | 108843 | Lelio R Paula | 01/2012 |
6876 | 2^361563-109501 | 108842 | Enzo Doria | 04/2014 |
6877 | 12^100852+83 | 108838 | Lelio R Paula | 03/2017 |
6878 | 2^361497+767 | 108822 | Lelio R Paula | 01/2012 |
6879 | L(520691)/78103651/1057002731/42794551909 | 108791 | Serge Batalov | 07/2024 |
6880 | 28019^7630+7630^28019 | 108785 | Hans Havermann | 10/2020 |
6881 | 24723^24758-24758^24723 | 108765 | Norbert Schneider | 11/2020 |
6882 | 2^361280-112349 | 108757 | Enzo Doria | 06/2014 |
6883 | 2^361271-5955 | 108754 | Lelio R Paula | 04/2017 |
6884 | 12^100757+19 | 108736 | Lelio R Paula | 03/2017 |
6885 | 25368^19333+19333^25368 | 108735 | Hans Havermann | 11/2020 |
6886 | (2^361195+3618)/2 | 108731 | Stefano Morozzi | 09/2020 |
6887 | 2^361153-111546435 | 108718 | Paul Bourdelais | 10/2021 |
6888 | 14^94849-61 | 108710 | Lelio R Paula | 05/2017 |
6889 | 27267^9700+9700^27267 | 108708 | Hans Havermann | 11/2020 |
6890 | (19^85009-5^85009)/14 | 108705 | Robert Price | 07/2013 |
6891 | 24832^23853+23853^24832 | 108704 | Hans Havermann | 11/2020 |
6892 | 27502^8963+8963^27502 | 108701 | Hans Havermann | 11/2020 |
6893 | (130^51419-1)/129 | 108695 | Anonymous | 06/2024 |
6894 | 25807^16278+16278^25807 | 108689 | Hans Havermann | 11/2020 |
6895 | (11*2^361027+1)/40463 | 108677 | Lelio R Paula | 03/2014 |
6896 | 2^360973+1299 | 108664 | Lelio R Paula | 04/2017 |
6897 | 24^78728+23 | 108662 | Anonymous | 09/2024 |
6898 | 2^360959-109101 | 108660 | Enzo Doria | 04/2014 |
6899 | 6*5^155454+7 | 108659 | Lelio R Paula | 11/2014 |
6900 | 10^108656+79 | 108657 | Lelio R Paula | 02/2017 |
6901 | 10^108656-50001 | 108656 | Patrick De Geest | 03/2017 |
6902 | 2^360918-35 | 108648 | Lelio R Paula | 01/2012 |
6903 | 4*10^108646-47 | 108647 | Robert Price | 10/2021 |
6904 | (11*2^360886-1)/7 | 108638 | Lelio R Paula | 03/2014 |
6905 | 3*10^108624-49 | 108625 | Robert Price | 07/2018 |
6906 | (2^360831+666)/2 | 108621 | Stefano Morozzi | 09/2020 |
6907 | (134*10^108610+7)/3 | 108612 | Robert Price | 02/2020 |
6908 | 2*10^108609+29 | 108610 | Robert Price | 02/2021 |
6909 | (10^108604+7)/71/191 | 108600 | Alfred Reich | 06/2021 |
6910 | (2^360742+3222)/2 | 108594 | Stefano Morozzi | 09/2020 |
6911 | 2^360706-458903 | 108584 | Enzo Doria | 04/2015 |
6912 | 31112^3087+3087^31112 | 108567 | Hans Havermann | 11/2020 |
6913 | 2^360641-113185 | 108564 | Enzo Doria | 07/2014 |
6914 | (29*10^108559-71)/3 | 108560 | Robert Price | 07/2021 |
6916 | 2^360618+75019 | 108557 | Enzo Doria | 04/2016 |
6915 | 2^360618+2025 | 108557 | Henri Lifchitz | 01/2025 |
6917 | 2^360607-216367 | 108554 | Harrison Mesh | 06/2022 |
6918 | (14*10^108545-221)/9 | 108546 | Robert Price | 04/2018 |
6919 | (44*10^108544-233)/9 | 108545 | Robert Price | 01/2019 |
6920 | 3*5^155286+2 | 108541 | Lelio R Paula | 11/2014 |
6921 | 7^128422+4 | 108530 | Lelio R Paula | 11/2014 |
6922 | 7^128421-80 | 108529 | Lelio R Paula | 03/2017 |
6923 | 2^360497+53807 | 108521 | Yves Minet | 07/2010 |
6924 | 2^360468-4559 | 108512 | Yves Minet | 03/2019 |
6925 | (2^360451+578)/2 | 108507 | Stefano Morozzi | 09/2020 |
6926 | 2^360366+1459 | 108481 | Lelio R Paula | 09/2011 |
6927 | 2^360364-1499 | 108481 | Yves Minet | 05/2013 |
6928 | 25662^16871+16871^25662 | 108477 | Hans Havermann | 10/2020 |
6929 | 25009^21748+21748^25009 | 108475 | Hans Havermann | 10/2020 |
6930 | 14^94642-23 | 108472 | Lelio R Paula | 05/2017 |
6931 | (197*10^108446-11)/3 | 108448 | Robert Price | 03/2020 |
6932 | (2^360229+1290)/2 | 108440 | Stefano Morozzi | 01/2021 |
6933 | 4*10^108412+9 | 108413 | Robert Price | 05/2015 |
6934 | (259*10^108409-1)/3 | 108411 | Robert Price | 12/2020 |
6935 | (2^360122+1194)/2 | 108408 | Stefano Morozzi | 09/2020 |
6936 | 133^51042-132 | 108406 | Norbert Schneider | 02/2019 |
6937 | 2^360093-351103 | 108399 | Enzo Doria | 06/2015 |
6938 | 2^360042+723 | 108384 | Lelio R Paula | 01/2012 |
6939 | 85^56164-2 | 108364 | Lelio R Paula | 10/2013 |
6940 | 2^359937-29323 | 108352 | Enzo Doria | 07/2015 |
6941 | 22^80712-23 | 108350 | Anonymous | 09/2024 |
6942 | (2^359922+1762)/2 | 108348 | Stefano Morozzi | 09/2020 |
6943 | (2^359903+758)/2 | 108342 | Stefano Morozzi | 09/2020 |
6944 | 2^359898-19997 | 108341 | Enzo Doria | 06/2013 |
6945 | (2^359886+2122)/2 | 108337 | Stefano Morozzi | 09/2020 |
6946 | 2*5^154948-7 | 108305 | Lelio R Paula | 11/2014 |
6947 | 10^108303+13 | 108304 | Lelio R Paula | 02/2017 |
6948 | 10^108303-207959 | 108303 | Patrick De Geest | 03/2017 |
6949 | 7*10^108300+69 | 108301 | Robert Price | 07/2019 |
6950 | 198^47155-47155^198 | 108300 | Norman Luhn | 09/2024 |
6951 | 2^359730+753 | 108290 | Lelio R Paula | 12/2011 |
6952 | (8*10^108273+13)/3 | 108274 | Robert Price | 06/2018 |
6953 | 2^359650-19797 | 108266 | Enzo Doria | 06/2013 |
6954 | (47*10^108261+259)/9 | 108262 | Robert Price | 03/2022 |
6955 | 91^55259-90^55259 | 108255 | Robert Price | 07/2015 |
6956 | 10^108251+85749 | 108252 | Patrick De Geest | 02/2021 |
6957 | 10^108251-50000000001 | 108251 | Robert Price | 12/2020 |
6958 | 10^108251-252081 | 108251 | Patrick De Geest | 02/2021 |
6959 | 4*10^108238-71 | 108239 | Robert Price | 12/2018 |
6960 | 3^226845+68 | 108233 | Lelio R Paula | 03/2017 |
6961 | 31836^2509+2509^31836 | 108227 | Hans Havermann | 10/2020 |
6962 | 5^154822-12866 | 108216 | Enzo Doria | 05/2014 |
6963 | (9*2^359480+1)/5 | 108215 | Lelio R Paula | 03/2014 |
6964 | 2^359454-177 | 108207 | Lelio R Paula | 12/2011 |
6965 | (19*10^108184+191)/3 | 108185 | Robert Price | 05/2019 |
6966 | 6^139022-59 | 108181 | Lelio R Paula | 02/2017 |
6967 | (19*10^108176-43)/3 | 108177 | Robert Price | 05/2019 |
6968 | 2^359352-179 | 108176 | Lelio R Paula | 12/2011 |
6969 | 2^359338-1858781 | 108172 | Enzo Doria | 04/2016 |
6970 | 12^100230-97 | 108167 | Lelio R Paula | 03/2017 |
6971 | 27028^10043+10043^27028 | 108163 | Hans Havermann | 11/2020 |
6972 | (25*2^359297-1)/137 | 108159 | Lelio R Paula | 03/2014 |
6973 | (2^359262-509203)/9 | 108148 | Lelio R Paula | 12/2013 |
6974 | 26583^11702+11702^26583 | 108147 | Hans Havermann | 11/2020 |
6975 | (3^226648-8)/352715633 | 108131 | Lelio R Paula | 12/2013 |
6976 | 6^138956-59 | 108129 | Lelio R Paula | 02/2017 |
6977 | 2^359184+30285 | 108126 | Lelio R Paula | 04/2017 |
6978 | 13^97059+10 | 108119 | Lelio R Paula | 03/2017 |
6979 | 2^359137-81 | 108112 | Lelio R Paula | 12/2011 |
6981 | (15185*2^359105-1)/567 | 108103 | Lelio R Paula | 05/2015 |
6980 | 2^359110-11655 | 108103 | Lelio R Paula | 04/2017 |
6982 | 2^359069-933075 | 108091 | Paul Bourdelais | 06/2021 |
6983 | 26227^13222+13222^26227 | 108090 | Hans Havermann | 10/2020 |
6984 | 8*6^138875+5 | 108067 | Lelio R Paula | 11/2014 |
6985 | 2^358987-216919 | 108066 | Enzo Doria | 05/2014 |
6986 | (2^358977+2714)/2 | 108063 | Stefano Morozzi | 09/2020 |
6987 | 39^67918-67918^39 | 108062 | Norbert Schneider | 02/2017 |
6988 | 24^78283-1*78283^24 | 108048 | Dylan Delgado | 12/2019 |
6989 | 25282^18767+18767^25282 | 108040 | Hans Havermann | 11/2020 |
6990 | 2^358785-16933 | 108006 | Enzo Doria | 05/2013 |
6991 | (2^358783+5)/33383 | 108000 | Lelio R Paula | 12/2013 |
6992 | 6^138770-77 | 107985 | Lelio R Paula | 02/2017 |
6993 | (2^358727-1017)/94178479 | 107980 | Lelio R Paula | 12/2013 |
6994 | 10^107976+19 | 107977 | Lelio R Paula | 02/2017 |
6995 | 10^107976-202103 | 107976 | Patrick De Geest | 03/2017 |
6996 | 2^358684+75781 | 107975 | Enzo Doria | 04/2016 |
6997 | 24928^21411+21411^24928 | 107955 | Hans Havermann | 10/2020 |
6998 | 99^54094+2 | 107952 | Lelio R Paula | 06/2013 |
6999 | (2^358583-9)/391 | 107942 | Lelio R Paula | 12/2013 |
7000 | (2^358562+838)/2 | 107938 | Stefano Morozzi | 02/2021 |