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 ? |
5751 | (71*10^117685+91)/9 | 117686 | Robert Price | 04/2022 |
5753 | 2^390897-1860553 | 117672 | Enzo Doria | 11/2015 |
5752 | (61*10^117671+47)/9 | 117672 | Robert Price | 07/2022 |
5754 | 2^390889-115003 | 117670 | Enzo Doria | 06/2015 |
5755 | 12^109010+35 | 117642 | Riley Fisher | 08/2023 |
5756 | 2^390779-30337 | 117637 | Paul Bourdelais | 02/2012 |
5757 | (2^390735+378)/2 | 117623 | Stefano Morozzi | 02/2021 |
5758 | 11^112916-780 | 117590 | Enzo Doria | 12/2012 |
5759 | 27641^17916+17916^27641 | 117564 | Hans Havermann | 02/2021 |
5760 | 27906^16321+16321^27906 | 117561 | Hans Havermann | 02/2021 |
5761 | 27294^20275+20275^27294 | 117555 | Hans Havermann | 02/2021 |
5762 | (2^390473+1002)/2 | 117544 | Stefano Morozzi | 09/2020 |
5763 | 35912^1875+1875^35912 | 117541 | Hans Havermann | 02/2021 |
5764 | (16^97613-5^97613)/11 | 117537 | Robert Price | 07/2013 |
5765 | (2^390438+1774)/2 | 117534 | Stefano Morozzi | 01/2021 |
5766 | (2^390418+1722)/2 | 117528 | Stefano Morozzi | 09/2020 |
5767 | (2^390403+654)/2 | 117523 | Stefano Morozzi | 09/2020 |
5768 | (2^390343+2246)/2 | 117505 | Stefano Morozzi | 01/2021 |
5769 | 28043^15478+15478^28043 | 117493 | Hans Havermann | 02/2021 |
5770 | (17*2^390272+1)/1983 | 117482 | Lelio R Paula | 04/2014 |
5771 | 37077^1474+1474^37077 | 117479 | Hans Havermann | 01/2021 |
5772 | 31^78759-30 | 117459 | Theodore Burton | 02/2007 |
5773 | (2^390176+1222)/2 | 117455 | Stefano Morozzi | 09/2020 |
5774 | (2^390133+1242)/2 | 117442 | Stefano Morozzi | 09/2020 |
5775 | (2^390013+2634)/2 | 117406 | Stefano Morozzi | 09/2020 |
5776 | 3*10^117402+61 | 117403 | Robert Price | 09/2020 |
5777 | 2^389998+37 | 117402 | Lelio R Paula | 03/2013 |
5778 | (2^389977+314)/2 | 117395 | Stefano Morozzi | 09/2020 |
5779 | (2^389921+342)/2 | 117378 | Stefano Morozzi | 01/2021 |
5780 | 71830^43+43^71830 | 117333 | Hans Havermann | 01/2021 |
5781 | (2^389768+1582)/2 | 117332 | Stefano Morozzi | 09/2020 |
5782 | 33802^2951+2951^33802 | 117292 | Hans Havermann | 02/2021 |
5783 | 26789^23866+23866^26789 | 117277 | Hans Havermann | 02/2021 |
5784 | 29^80192-1*80192^29 | 117273 | Dylan Delgado | 12/2019 |
5785 | (101*10^117260+7)/9 | 117262 | Robert Price | 02/2022 |
5786 | (13*10^117249+161)/3 | 117250 | Robert Price | 11/2018 |
5787 | 2^389478+43 | 117245 | Lelio R Paula | 03/2013 |
5788 | (298*10^117229-7)/3 | 117231 | Robert Price | 06/2020 |
5789 | (2^389416+342)/2 | 117226 | Stefano Morozzi | 01/2021 |
5790 | (29*2^389351-1)/9 | 117207 | Lelio R Paula | 04/2014 |
5791 | 5*10^117205+23 | 117206 | Robert Price | 03/2019 |
5792 | (2^389341-7)/3865 | 117200 | Lelio R Paula | 03/2014 |
5793 | 27272^19827+19827^27272 | 117195 | Hans Havermann | 01/2021 |
5794 | (2^389276+2650)/2 | 117184 | Stefano Morozzi | 09/2020 |
5795 | (844*10^117175-7)/9 | 117177 | Robert Price | 05/2021 |
5796 | 10^117142+209223 | 117143 | Patrick De Geest | 04/2018 |
5798 | 10^117142-1000000001 | 117142 | Robert Price | 03/2018 |
5797 | 10^117142-966057 | 117142 | Patrick De Geest | 04/2018 |
5799 | 10^117135+360577 | 117136 | Patrick De Geest | 07/2018 |
5800 | 10^117135-401 | 117135 | Robert Price | 01/2018 |
5801 | 26415^26488-26488^26415 | 117126 | Norbert Schneider | 05/2021 |
5802 | 4*10^117123+79 | 117124 | Robert Price | 08/2018 |
5803 | 2^389033-12797413 | 117111 | Enzo Doria | 04/2016 |
5804 | (2^388987+2634)/2 | 117097 | Stefano Morozzi | 09/2020 |
5805 | 2^388960-109505 | 117089 | Enzo Doria | 04/2014 |
5806 | 7*10^117082-57 | 117083 | Robert Price | 06/2020 |
5807 | 791^40398-40398^791 | 117081 | Norman Luhn | 09/2024 |
5808 | (2^388928-5)/569 | 117077 | Lelio R Paula | 03/2014 |
5809 | 2^388888-1529 | 117067 | Yves Minet | 01/2013 |
5810 | 10^117059+28879 | 117060 | Patrick De Geest | 05/2016 |
5811 | (10^117059-71)/1 | 117059 | Serge Batalov | 12/2014 |
5812 | (2^388854+3630)/2 | 117057 | Stefano Morozzi | 09/2020 |
5813 | (2^388842+2098)/2 | 117053 | Stefano Morozzi | 09/2020 |
5814 | (2^388789+3150)/2 | 117037 | Stefano Morozzi | 09/2020 |
5815 | (2^388748+378)/2 | 117025 | Stefano Morozzi | 02/2021 |
5816 | (693^41189-1)/692 | 117005 | Michael Stocker | 05/2020 |
5817 | (26*10^116999-503)/9 | 117000 | Robert Price | 07/2018 |
5818 | 20^89917-21 | 116985 | Anonymous | 09/2024 |
5819 | (2^388609+1554)/2 | 116983 | Stefano Morozzi | 09/2020 |
5820 | 38496^1093+1093^38496 | 116975 | Hans Havermann | 02/2021 |
5821 | 3^245154-6256 | 116969 | Enzo Doria | 05/2014 |
5822 | 5*10^116966-43 | 116967 | Robert Price | 01/2019 |
5823 | 2^388536-113495 | 116961 | Enzo Doria | 08/2014 |
5824 | (2^388512+382)/2 | 116954 | Stefano Morozzi | 02/2021 |
5825 | (8*32^77701+271)/31 | 116952 | Eric Chen | 11/2023 |
5826 | 2^388469-43 | 116941 | Lelio R Paula | 03/2013 |
5827 | 27417^18416+18416^27417 | 116939 | Hans Havermann | 02/2021 |
5828 | (2^388438+1842)/2 | 116932 | Stefano Morozzi | 02/2021 |
5829 | (7*2^388372-1)/111 | 116911 | Lelio R Paula | 04/2014 |
5830 | (7*2^388335-1)/25 | 116900 | Lelio R Paula | 04/2014 |
5831 | 2^388180+93 | 116854 | Donovan Johnson | 07/2008 |
5832 | (2^388167+2510)/2 | 116850 | Stefano Morozzi | 09/2020 |
5833 | (85*10^116842+293)/9 | 116843 | Robert Price | 12/2019 |
5834 | 35296^2043+2043^35296 | 116840 | Hans Havermann | 02/2021 |
5835 | (2^388081+7)/1179 | 116821 | Lelio R Paula | 03/2014 |
5836 | 38633^1056+1056^38633 | 116814 | Hans Havermann | 02/2021 |
5837 | 2^387946-113261 | 116784 | Enzo Doria | 07/2014 |
5838 | 28*36^75009+305 | 116739 | Eric Chen | 12/2022 |
5839 | 28363^13056+13056^28363 | 116737 | Hans Havermann | 02/2021 |
5840 | 2^387745+75557 | 116723 | Enzo Doria | 04/2016 |
5841 | (29*10^116719+313)/9 | 116720 | Robert Price | 04/2021 |
5842 | 29622^8699+8699^29622 | 116695 | Hans Havermann | 02/2021 |
5843 | (206*10^116687-17)/9 | 116689 | Robert Price | 01/2020 |
5844 | (7*10^116684+179)/3 | 116685 | Robert Price | 09/2018 |
5845 | 2^387554+71455 | 116666 | Enzo Doria | 04/2016 |
5846 | (602*10^116647-71)/9 | 116649 | Robert Price | 12/2021 |
5847 | 3^244461-10 | 116638 | Tyler NeSmith | 09/2022 |
5848 | (2^387447+78557)/365 | 116631 | Lelio R Paula | 12/2014 |
5849 | (2*10^116620+43)/9 | 116620 | Serge Batalov | 11/2022 |
5850 | (19*10^116617+287)/9/12893 | 116614 | Alfred Reich | 11/2022 |
5851 | (145*10^116610-1)/9 | 116612 | Serge Batalov | 12/2014 |
5852 | (25*10^116601-331)/9 | 116602 | Robert Price | 08/2018 |
5853 | 25791^26428-26428^25791 | 116587 | Frank Doornink | 03/2024 |
5855 | (17*2^387284-1)/59 | 116584 | Lelio R Paula | 04/2014 |
5854 | (2^387284+3726)/2 | 116584 | Stefano Morozzi | 09/2020 |
5856 | 2^387211+111546435 | 116563 | Paul Bourdelais | 10/2021 |
5857 | 10^116557+987654321 | 116558 | Robert Price | 12/2019 |
5858 | 10^116557+9141 | 116558 | Patrick De Geest | 02/2020 |
5859 | 10^116557-609431 | 116557 | Patrick De Geest | 02/2020 |
5860 | 209^50234-50234^209 | 116551 | Norman Luhn | 09/2024 |
5861 | (28*10^116546+41)/3 | 116547 | Robert Price | 07/2021 |
5862 | (2^387123+1814)/2 | 116536 | Stefano Morozzi | 02/2021 |
5863 | (2^387076+2046)/2 | 116522 | Stefano Morozzi | 09/2020 |
5864 | (2^387073+2570)/2 | 116521 | Stefano Morozzi | 09/2020 |
5865 | (7*10^116514-1)/3 | 116515 | Robert Price | 08/2022 |
5866 | (26*32^77406-390071011)/31 | 116508 | Eric Chen | 11/2023 |
5867 | 28846^10931+10931^28846 | 116500 | Hans Havermann | 02/2021 |
5868 | 10^116496+3593037 | 116497 | Paul Bourdelais | 10/2021 |
5869 | 272^47851-47851^272 | 116497 | Norman Luhn | 09/2024 |
5870 | (31*2^386968+1)/7 | 116490 | Lelio R Paula | 03/2014 |
5871 | 2^386947+1869143 | 116483 | Enzo Doria | 05/2016 |
5872 | (30^78857-1)/29 | 116480 | Robert Price | 12/2011 |
5873 | (2^386903-3)/5 | 116469 | Lelio R Paula | 03/2014 |
5874 | 28107^13892+13892^28107 | 116441 | Hans Havermann | 02/2021 |
5875 | 29110^9957+9957^29110 | 116386 | Hans Havermann | 02/2021 |
5876 | 26469^24838+24838^26469 | 116335 | Hans Havermann | 01/2021 |
5877 | 2^386389-1864783 | 116315 | Enzo Doria | 03/2016 |
5878 | (8*32^77250-163)/31 | 116273 | Eric Chen | 11/2023 |
5879 | (31*2^386231-1)/1711 | 116266 | Lelio R Paula | 03/2014 |
5880 | 297^47012+47012^297 | 116250 | Norbert Schneider | 07/2018 |
5881 | (35*10^116223-341)/9 | 116224 | Robert Price | 08/2021 |
5882 | (2^386087-5)/40959 | 116220 | Lelio R Paula | 03/2014 |
5883 | (2^386054+714)/2 | 116214 | Stefano Morozzi | 09/2020 |
5884 | (10^116201+7)/39623 | 116197 | Alfred Reich | 06/2021 |
5885 | 2^385969-823 | 116189 | Yves Minet | 05/2012 |
5886 | 57^66162+2 | 116173 | Lelio R Paula | 08/2013 |
5887 | 2^385854+75049 | 116154 | Enzo Doria | 04/2016 |
5888 | (2^385832+2590)/2 | 116147 | Stefano Morozzi | 09/2020 |
5889 | 2^385775-109587 | 116130 | Enzo Doria | 04/2014 |
5890 | (14*10^116112-101)/3 | 116113 | Robert Price | 02/2019 |
5891 | Phi(236354,10)/24817171 | 116109 | Makoto Kamada | 08/2019 |
5892 | 3*10^116107+23 | 116108 | Robert Price | 03/2022 |
5893 | 28729^10990+10990^28729 | 116094 | Hans Havermann | 02/2021 |
5894 | 2^385622+71839 | 116084 | Enzo Doria | 04/2016 |
5896 | 2^385564+781 | 116067 | Lelio R Paula | 01/2012 |
5895 | (2^385565+1562)/2 | 116067 | Stefano Morozzi | 09/2020 |
5897 | (2^385563+378)/2 | 116066 | Stefano Morozzi | 02/2021 |
5898 | (2^385557+2214)/2 | 116064 | Stefano Morozzi | 09/2020 |
5899 | 29431^8776+8776^29431 | 116056 | Hans Havermann | 01/2021 |
5900 | (266*10^116024-17)/3 | 116026 | Robert Price | 07/2020 |
5901 | 30263^6820+6820^30263 | 116022 | Hans Havermann | 02/2021 |
5902 | 2^385410+71893 | 116020 | Enzo Doria | 04/2016 |
5903 | 38225^1084+1084^38225 | 116014 | Hans Havermann | 02/2021 |
5904 | 26548^23433+23433^26548 | 116011 | Hans Havermann | 02/2021 |
5905 | 12^107422-11 | 115928 | Riley Fisher | 12/2023 |
5906 | (25*2^385091+1)/27 | 115924 | Lelio R Paula | 04/2014 |
5907 | (11*10^115910-131)/3 | 115911 | Robert Price | 09/2018 |
5908 | 2^384953-111943 | 115883 | Paul Bourdelais | 02/2012 |
5909 | 43^70942-2 | 115882 | Lelio R Paula | 04/2014 |
5910 | (94*10^115879-7)/3 | 115881 | Robert Price | 03/2020 |
5911 | 7*10^115863+3 | 115864 | Robert Price | 08/2015 |
5912 | 2^384834+93 | 115847 | Donovan Johnson | 07/2008 |
5913 | 2^384809+71297 | 115840 | Enzo Doria | 04/2016 |
5914 | (55*10^115829+323)/9 | 115830 | Robert Price | 10/2021 |
5915 | (7*2^384759-1)/5 | 115825 | Lelio R Paula | 04/2014 |
5916 | 31348^4951+4951^31348 | 115822 | Hans Havermann | 02/2021 |
5917 | (793*10^115810+53)/9 | 115812 | Robert Price | 01/2022 |
5918 | (71*10^115810-17)/9 | 115811 | Ray Chandler | 08/2011 |
5919 | (97*10^115794-1)/3 | 115796 | Serge Batalov | 12/2014 |
5920 | 31115^5266+5266^31115 | 115794 | Hans Havermann | 02/2021 |
5921 | 2*10^115784-27 | 115785 | Robert Price | 05/2018 |
5922 | 10^115773+126739 | 115774 | Patrick De Geest | 04/2018 |
5924 | 10^115773-1000000001 | 115773 | Robert Price | 03/2018 |
5923 | 10^115773-396221 | 115773 | Patrick De Geest | 04/2018 |
5925 | (2^384582+778)/2 | 115771 | Stefano Morozzi | 09/2020 |
5926 | 30537^6178+6178^30537 | 115762 | Hans Havermann | 01/2021 |
5927 | 2^384530+1874305 | 115756 | Enzo Doria | 06/2016 |
5928 | (3*2^384524-1)/7631 | 115750 | Lelio R Paula | 03/2014 |
5929 | 28275^12406+12406^28275 | 115748 | Hans Havermann | 01/2021 |
5930 | (44*10^115697-413)/9 | 115698 | Robert Price | 03/2019 |
5931 | 31408^4825+4825^31408 | 115692 | Hans Havermann | 02/2021 |
5932 | (2^384317+1026)/2 | 115691 | Stefano Morozzi | 09/2020 |
5933 | 2^384312+81091 | 115690 | Yves Minet | 02/2010 |
5934 | (2^384265+2150)/2 | 115675 | Stefano Morozzi | 09/2020 |
5935 | (2^384246+2182)/2 | 115670 | Stefano Morozzi | 09/2020 |
5936 | (4*10^115668-79)/3 | 115669 | Robert Price | 02/2018 |
5937 | (2^384193+242)/2 | 115654 | Stefano Morozzi | 09/2020 |
5938 | (266947#+1267)/(7^2*181) | 115647 | Makoto Morimoto | 06/2019 |
5939 | (266947#+273808)/(2*109*157) | 115646 | Makoto Morimoto | 10/2017 |
5940 | 18^92125-92125^18 | 115642 | Dylan Delgado | 08/2019 |
5941 | 3^242337-4042 | 115625 | Enzo Doria | 05/2014 |
5942 | (17699*31^77516-29)/30 | 115608 | Eric Chen | 05/2024 |
5943 | (2^383931+674)/2 | 115575 | Stefano Morozzi | 09/2020 |
5944 | 7*10^115561+79 | 115562 | Robert Price | 07/2019 |
5945 | (2^383872+3046)/2 | 115557 | Stefano Morozzi | 09/2020 |
5946 | (11*2^383859-13)/15 | 115553 | Renaud Lifchitz | 03/2011 |
5947 | 2^383780-3149 | 115530 | Yves Minet | 10/2014 |
5948 | (41*10^115523-383)/9 | 115524 | Robert Price | 11/2018 |
5949 | 27316^16923+16923^27316 | 115506 | Hans Havermann | 02/2021 |
5950 | (2^383618+618)/2 | 115481 | Stefano Morozzi | 09/2020 |
5951 | 2^383560-455 | 115464 | Yves Minet | 03/2012 |
5952 | (2^383544+5)/3 | 115458 | Lelio R Paula | 03/2014 |
5953 | (22*10^115454+119)/3 | 115455 | Robert Price | 04/2021 |
5954 | 89^59221-88^59221 | 115445 | Robert Price | 06/2015 |
5955 | (7^136559-5^136559)/2 | 115406 | Jon Grantham | 08/2023 |
5956 | 2^383347+1869413 | 115399 | Enzo Doria | 05/2016 |
5957 | (103*10^115366+17)/3 | 115368 | Robert Price | 08/2020 |
5958 | (2^383232+750)/2 | 115365 | Stefano Morozzi | 09/2020 |
5959 | (2^383130-7)/131793 | 115329 | Lelio R Paula | 03/2014 |
5960 | (12^106859+1)/13 | 115320 | Paul Bourdelais | 02/2010 |
5961 | 29961^7060+7060^29961 | 115315 | Hans Havermann | 01/2021 |
5963 | 2^383039+1869509 | 115307 | Enzo Doria | 05/2016 |
5962 | 32918^3183+3183^32918 | 115307 | Hans Havermann | 01/2021 |
5964 | 36964^1315+1315^36964 | 115288 | Hans Havermann | 02/2021 |
5965 | (13*2^382968+1)/7 | 115286 | Lelio R Paula | 04/2014 |
5966 | (22*10^115282+29)/3 | 115283 | Robert Price | 02/2021 |
5967 | (2^382945+2046)/2 | 115278 | Stefano Morozzi | 09/2020 |
5968 | (2^382789+3182)/2 | 115231 | Stefano Morozzi | 09/2020 |
5969 | 30416^6141+6141^30416 | 115224 | Hans Havermann | 02/2021 |
5970 | 6*10^115211+79 | 115212 | Robert Price | 09/2020 |
5971 | (2^382722+3598)/2 | 115211 | Stefano Morozzi | 09/2020 |
5972 | 27987^13078+13078^27987 | 115210 | Hans Havermann | 02/2021 |
5973 | (2^382699+2090)/2 | 115204 | Stefano Morozzi | 09/2020 |
5974 | (22*10^115188-193)/9 | 115189 | Robert Price | 07/2022 |
5975 | 2^382633+73697 | 115185 | Enzo Doria | 04/2016 |
5976 | 2^382509-113593 | 115147 | Enzo Doria | 08/2014 |
5977 | 2^382502-2791721 | 115145 | Enzo Doria | 03/2016 |
5978 | (2^382495+1274)/2 | 115143 | Stefano Morozzi | 01/2021 |
5979 | 2^382464+22741 | 115134 | Enzo Doria | 09/2023 |
5980 | 26752^20065+20065^26752 | 115099 | Hans Havermann | 02/2021 |
5981 | 26383^23008+23008^26383 | 115080 | Hans Havermann | 02/2021 |
5982 | 9^120590-120590 | 115073 | Robert Price | 03/2014 |
5983 | 28203^12016+12016^28203 | 115062 | Hans Havermann | 02/2021 |
5984 | 2^382198+9 | 115054 | Lelio R Paula | 03/2013 |
5985 | 18268*31^77131+22839 | 115035 | Eric Chen | 05/2024 |
5986 | 30101^6630+6630^30101 | 115032 | Hans Havermann | 01/2021 |
5987 | (89*10^115030-179)/9 | 115031 | Robert Price | 12/2019 |
5988 | 25554^26089-26089^25554 | 114987 | Frank Doornink | 02/2024 |
5989 | 25142^26129-26129^25142 | 114979 | Frank Doornink | 12/2023 |
5990 | (2^381935+2774)/2 | 114974 | Stefano Morozzi | 02/2021 |
5991 | 27300^16271+16271^27300 | 114972 | Hans Havermann | 02/2021 |
5992 | (23*10^114962+7)/3 | 114963 | Robert Price | 05/2023 |
5993 | 2^381883-59197 | 114959 | Enzo Doria | 10/2015 |
5994 | 27423^15542+15542^27423 | 114944 | Hans Havermann | 02/2021 |
5995 | (2^381820+1626)/2 | 114939 | Stefano Morozzi | 09/2020 |
5997 | 2^381806-4481 | 114936 | Yves Minet | 07/2011 |
5996 | 2^381808-1851507 | 114936 | Enzo Doria | 08/2015 |
5998 | (2^381792+2502)/2 | 114931 | Stefano Morozzi | 09/2020 |
5999 | 2^381774-112373 | 114926 | Enzo Doria | 06/2014 |
6000 | 26341^22980+22980^26341 | 114883 | Hans Havermann | 01/2021 |