PRP Records

Probable Primes Top 10000

(303439 PRPs in the top)


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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1-250   251-500   501-750   751-1000   1001-1250   1251-1500   1501-1750   1751-2000   
2001-2250   2251-2500   2501-2750   2751-3000   3001-3250   3251-3500   3501-3750   3751-4000   
4001-4250   4251-4500   4501-4750   4751-5000   5001-5250   5251-5500   5501-5750   5751-6000   
6001-6250   6251-6500   6501-6750   6751-7000   7001-7250   7251-7500   7501-7750   7751-8000   
8001-8250   8251-8500   8501-8750   8751-9000   9001-9250   9251-9500   9501-9750   9751-10000   


Rank Probable prime Digits (> 50000) Who ? When ?
5501(76*10^135553-49)/9135554Robert Price07/2022
55025*3^284077+2^284077135540Jon Grantham08/2023
5503(844*10^135527-7)/9135529Robert Price05/2021
550427191^30560-30560^27191135517Frank Doornink01/2024
550540387^2260+2260^40387135463Hans Havermann12/2020
55062^449944-113247135447Enzo Doria07/2014
5507Phi(70509,-1105)135418Henri Lifchitz12/2025
55082^449770-113247135395Enzo Doria07/2014
55092^449637-21471135355Enzo Doria07/2013
551026061^30650-30650^26061135351Frank Doornink03/2024
55112^449571-75135335Lelio R Paula08/2017
5512(14*10^135301-53)/3135302Robert Price12/2018
5513(3*2^449494+1)/61340334013135301Lelio R Paula07/2015
5514(13*10^135279+437)/9135280Robert Price04/2018
55152^449330-35135262Lelio R Paula08/2017
5516(19*2^449325+1)/9135261Lelio R Paula07/2015
5517(2709^39601+1)/(2709^199+1)135260Martin Hopf12/2023
5518(13*10^135184-43)/3135185Robert Price11/2018
55192^449049-115309135178Enzo Doria07/2015
5520(10^135174+191)/3135174Robert Price02/2018
55212^449030-15135172Lelio R Paula08/2017
5522(157*10^135151-1)/3135153Robert Price01/2022
5523(2^448966+100280245065)135153Paul Bourdelais05/2022
5524(27*2^448936-1)/11135144Lelio R Paula07/2015
5525(37*10^135099+251)/9135100Robert Price09/2021
552632221^15586+15586^32221135095Hans Havermann12/2020
55272^448762-351401135091Enzo Doria07/2015
55282*10^135083-43135084Robert Price04/2018
552931357^20278+20278^31357135056Hans Havermann12/2020
553032242^15445+15445^32242135055Hans Havermann12/2020
5531k(198476)135054Robert Price07/2020
553232461^14470+14470^32461135053Hans Havermann12/2020
553331353^20288+20288^31353135045Hans Havermann12/2020
55345*10^135019+77135020Robert Price12/2018
5535(10^135011+719)/9135011Serge Batalov12/2014
5536(197*10^134978+7)/3134980Robert Price12/2020
55372^448386-2786261134978Enzo Doria03/2016
553826480^30517-30517^26480134975Frank Doornink03/2024
5539(73*10^134939+143)/9134940Robert Price07/2019
554033957^9392+9392^33957134903Hans Havermann12/2020
55412^448122+20809134899Enzo Doria08/2023
55422^448113-113949134896Enzo Doria11/2014
554330958^22755+22755^30958134887Hans Havermann12/2020
55442^447888-2786639134828Enzo Doria03/2016
55452^447870-396765134823Enzo Doria07/2013
554610^(2*67404+1)-10^67404-1134809Robert Price07/2023
55472^447766-21791134791Enzo Doria07/2013
5548(19*10^134786-49)/3134787Robert Price05/2019
5549Phi(202173,10)/10064306514895399941409134758Makoto Kamada05/2019
5550(23*2^447647+1)/155134755Lelio R Paula07/2015
55512^447552-1019134727Yves Minet02/2014
5552(2*10^134720-41)/3134720Robert Price02/2018
5553(25*10^134695-97)/9134696Robert Price01/2022
55542^447437-113569134692Enzo Doria08/2014
55552^447426-65134689Lelio R Paula08/2017
55562^447357-2797573134668Enzo Doria04/2016
55572^447278+93134645Lelio R Paula08/2017
555833193^11370+11370^33193134623Hans Havermann12/2020
555930736^23979+23979^30736134619Hans Havermann11/2020
55602^447094-113193134589Enzo Doria07/2014
55613^282041-9934134568Enzo Doria05/2014
55622^447019-109039134567Enzo Doria04/2014
556331376^19437+19437^31376134561Hans Havermann12/2020
55642^446990-22041134558Enzo Doria07/2013
5565123^64370+122134528Karsten Bonath04/2018
556630100^29461+29461^30100134525Hans Havermann11/2020
556731251^20158+20158^31251134519Hans Havermann11/2020
55682^446782-39701134495Enzo Doria09/2015
556931817^16858+16858^31817134485Hans Havermann12/2020
557032448^13937+13937^32448134471Hans Havermann12/2020
55715^192321+3^192321-1134427Jon Grantham08/2023
55722^446494-16485134409Enzo Doria04/2013
557330042^29785+29785^30042134408Hans Havermann12/2020
557429504^30069-30069^29504134405Norbert Schneider12/2014
55752^446441+65134393Lelio R Paula08/2017
5576(10^134385+719)/9134385Serge Batalov12/2014
557730043^29688+29688^30043134370Hans Havermann12/2020
5578(2*10^134364+529)/9134364Robert Price01/2018
557934657^7512+7512^34657134323Hans Havermann11/2020
5580(13*2^446187-1)/661134314Lelio R Paula07/2015
55815^192103+3^192103+2^192103+1134275Matthias Baur12/2019
558242035^1564+1564^42035134270Hans Havermann12/2020
5584(2^446022-7)/339134264Lelio R Paula07/2015
558330621^24248+24248^30621134264Hans Havermann12/2020
558530341^26562+26562^30341134237Hans Havermann11/2020
5586(189^58967-1)/188134234Anonymous06/2024
558710^134209+99867134210Patrick De Geest05/2021
558810^134209-80000001134209Robert Price04/2021
558910^134209-323283134209Patrick De Geest05/2021
559029976^29953+29953^29976134186Hans Havermann12/2020
559135038^6755+6755^35038134183Hans Havermann12/2020
559263^74568+2134174Lelio R Paula06/2017
55932^445671-22071134161Enzo Doria07/2013
5594532^49205+49205^532134129Norbert Schneider02/2019
559536453^4780+4780^36453134127Hans Havermann04/2021
5596(28*10^134122-1)/9134123Serge Batalov10/2014
55972^445515-113859134114Enzo Doria10/2014
5598(22*10^134111-37)/3134112Robert Price04/2019
559931083^20636+20636^31083134112Hans Havermann04/2021
56003*2^445478+5134103Jon Grantham07/2023
560131622^17379+17379^31622134079Hans Havermann04/2021
56025*2^445380-3134074Jon Grantham07/2023
5603(6*32^89076+4241)/31134073Eric Chen11/2023
5604(277*10^134059-7)/9134061Robert Price02/2022
56052^445328-216917134058Enzo Doria05/2014
56062^445202+1874899134020Enzo Doria06/2016
56075^191739-3^191739-1134020Jon Grantham08/2023
5608(35*10^134003-89)/9134004Robert Price02/2022
5609(13*2^445102+1)/17133989Lelio R Paula07/2015
5610(35*10^133979-593)/9133980Robert Price07/2018
56112*10^133955+51133956Robert Price05/2018
5612(49*10^133952+437)/9133953Robert Price09/2021
56132^444964-113639133948Enzo Doria08/2014
561431811^16240+16240^31811133943Hans Havermann04/2021
561510^133902+167841133903Patrick De Geest05/2021
561728118^30097-30097^28118133902Norbert Schneider01/2015
561610^133902-100001133902Robert Price07/2020
56182^444784-113859133894Enzo Doria10/2014
5619(132^63127-1)/131133864Anonymous06/2024
562032303^13914+13914^32303133846Hans Havermann04/2021
5621(29^91493-3^91493)/26133798Robert Price06/2025
5622(2276213*2^444444+1)/3133797Alex_soldier11/2022
5623(1403559*2^444444+1)/5133797Alex_soldier11/2022
5624(1209887*2^444444+1)/9133797Alex_soldier11/2022
5625(608239*2^444444+1)/25133796Alex_soldier11/2022
5626(1824587*2^444444+1)/27133796Alex_soldier11/2022
5627(40795*2^444444+1)/7133795Alex_soldier11/2022
562830739^22458+22458^30739133757Hans Havermann04/2021
562934942^6721+6721^34942133739Hans Havermann04/2021
5630(3^280229-1)/1120918133698Aurel Gibier03/2025
5631(2^444046+100280245065)133672Paul Bourdelais05/2022
563234792^6935+6935^34792133638Hans Havermann04/2021
5633(266*10^133603+1)/3133605Robert Price04/2020
563432261^13842+13842^32261133600Hans Havermann04/2021
5635(89*10^133580+1)/9133581Serge Batalov05/2010
5636(134*10^133573-11)/3133575Robert Price01/2022
563726726^30173-30173^26726133574Frank Doornink03/2024
56382^443721+39527133574Enzo Doria11/2024
563962^74521-61^74521133571Robert Price05/2013
5640(182*10^133543+1)/3133545Robert Price02/2020
5641(103*10^133535+11)/3133537Robert Price01/2021
564232589^12520+12520^32589133537Hans Havermann03/2021
56432^443590-431651133534Maxim Gerspach08/2026
5644L(638839)/274700771133502Serge Batalov07/2024
564534516^7373+7373^34516133496Hans Havermann04/2021
56468*10^133487-37133488Robert Price03/2022
564730135^26882+26882^30135133482Hans Havermann04/2021
56482^443198-1867301133416Enzo Doria03/2016
564927^93192+26133392Anonymous09/2024
5650(19*10^133390+101)/3133391Robert Price09/2019
5651(71^72043-1)/70133369Paul Bourdelais09/2017
5652(17508!^2+1)/(1453817*25094393)133366Michael Porter09/2025
565336117^4910+4910^36117133311Hans Havermann04/2021
56542^442799+1874633133296Enzo Doria06/2016
5655L(637751)133283Henri Lifchitz09/2008
5656109^65410-2133269Lelio R Paula10/2017
56572^442688-113489133263Enzo Doria08/2014
5658(7*2^442640-1)/783133246Lelio R Paula07/2015
5659(23^97849+22^97849)/45133243Robert Price10/2026
5660(9*2^442463+1)/17441133192Lelio R Paula07/2015
56612^442437-1849993133187Enzo Doria08/2015
56622^442430-2791721133185Enzo Doria03/2016
5663(13*2^442428-1)/309133183Lelio R Paula07/2015
566429959^27870+27870^29959133172Hans Havermann03/2021
5665(25*2^442379-1)/71133169Lelio R Paula07/2015
56662^442368+213691133167Enzo Doria09/2023
566734240^7737+7737^34240133145Hans Havermann03/2021
5668452^50145+50145^452133142Norbert Schneider09/2020
5669(355^52201-1)/354133122Tom Wu08/2024
5670(3^278981-1)/14507014133101Paul Vanderveen05/2025
567130659^21796+21796^30659133011Hans Havermann04/2021
567233276^9935+9935^33276133010Hans Havermann04/2021
567330111^26122+26122^30111133001Hans Havermann04/2021
567430790^20869+20869^30790132998Hans Havermann04/2021
5676(2^441799+78557)/5132995Lelio R Paula07/2015
56758*10^132994-27132995Robert Price10/2021
5677(109*10^132992+11)/3132994Robert Price06/2022
56782^441781-2787883132990Enzo Doria03/2016
5679fibonacci(636232)+4132965Jon Grantham08/2023
5680(3*2^441685+1)/749132959Lelio R Paula07/2015
56812^441618+37132941Lelio R Paula08/2017
568234857^6514+6514^34857132940Hans Havermann04/2021
568334065^7988+7988^34065132937Hans Havermann04/2021
568435571^5452+5452^35571132914Hans Havermann04/2021
56852^441521-113575132912Enzo Doria08/2014
56867*10^132884-99132885Robert Price06/2019
568726987^29988-29988^26987132882Frank Doornink03/2024
5688(103*10^132879+17)/3132881Robert Price08/2020
56892^441396-65132874Lelio R Paula08/2017
569033350^9633+9633^33350132859Hans Havermann04/2021
56912^441330+1871959132854Enzo Doria05/2016
569225772^30111-30111^25772132825Frank Doornink02/2024
56932^441063+383132774Lelio R Paula06/2012
5694(10^132753+7)/17/19132751Alfred Reich06/2021
5695(22*10^132746+53)/3132747Robert Price07/2019
5696(77*10^132744-149)/9132745Robert Price03/2022
5697(22*10^132732+119)/3132733Robert Price04/2021
56982^440846+1870909132708Enzo Doria05/2016
5699(948^44579-1)/947132701Jinyuan Wang04/2023
57002^440656-113489132651Enzo Doria08/2014
5701numbpart(14180123587)132646Serge Batalov04/2017
570232950^10591+10591^32950132622Hans Havermann04/2021
570333302^9597+9597^33302132614Hans Havermann04/2021
5704(19*10^132550+191)/3132551Robert Price05/2019
5705(2^440399-1)/(16210820281161978209*31518475633*880799)132538Dario Alpern01/2015
5706(38^83891+1)/39132529Robert Price09/2013
57072*10^132493-43132494Robert Price04/2018
570831352^16809+16809^31352132480Hans Havermann04/2021
5709(418*10^132441+23)/9132443Robert Price02/2020
57102^439931-21132433Lelio R Paula08/2017
571147^79201-46^79201132432Robert Price10/2012
57122^439897-113653132423Enzo Doria08/2014
571335505^5362+5362^35505132410Hans Havermann03/2021
571430079^25222+25222^30079132402Hans Havermann04/2021
5715(5*2^439822+1)/9132400Lelio R Paula06/2015
5716(695*10^132356+7)/9132358Robert Price12/2021
5717(112*10^132337-1)/3132339Serge Batalov12/2014
57182^439576-113247132326Enzo Doria07/2014
5719(7^156589-1)/65346468774132323Paul Vanderveen05/2025
572030059^25230+25230^30059132318Hans Havermann04/2021
57212^439497-29143132302Enzo Doria07/2015
57222^439409-114193132276Enzo Doria12/2014
5723(39^83137+2^83137)/41132275Robert Price12/2024
5724(44*10^132233-233)/9132234Robert Price01/2019
572525507^30000-30000^25507132200Frank Doornink02/2024
57269*10^132148-7132149Robert Price09/2015
5727V(790390)132144Serge Batalov07/2024
5728(47*10^132125-119)/9132126Robert Price05/2019
57292^438900+214051132123Enzo Doria10/2023
57302^438845+1870217132106Enzo Doria05/2016
5731Phi(293229,-5)132106Henri Lifchitz02/2026
57322^438789+87855132089Lelio R Paula01/2016
57332^438774-2786411132085Enzo Doria03/2016
57342^438755-1848205132079Enzo Doria07/2015
573530502^21381+21381^30502132075Hans Havermann04/2021
57362^438739-112087132074Enzo Doria06/2014
5737(588859*29^90289-19)/28132043Eric Chen06/2025
5738(2^438438+100280245065)131983Paul Bourdelais05/2022
573935872^4777+4777^35872131979Hans Havermann04/2021
574031198^16945+16945^31198131938Hans Havermann03/2021
5741(28^91163+27^91163)/55131926Robert Price10/2026
574213907#+(318259#)/(13907#)131923Makoto Morimoto10/2017
5743L(631181)131910Henri Lifchitz09/2008
5744(47*10^131886-119)/9131887Robert Price05/2019
57455*2^438096-3131881Jon Grantham07/2023
5746(3*2^438121+1)/4308193883131879Lelio R Paula06/2015
57472^438079-1863877131875Enzo Doria03/2016
5748(16*10^131872-37)/3131873Robert Price05/2021
5749(2^438067+5)/329131869Lelio R Paula06/2015
57502^437908-113855131824Enzo Doria09/2014


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: November, 04 2026 09:32 (Time in France)

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