PRP Records

Probable Primes Top 10000

(303377 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 ?
55012^448762-351401135091Enzo Doria07/2015
55022*10^135083-43135084Robert Price04/2018
550331357^20278+20278^31357135056Hans Havermann12/2020
550432242^15445+15445^32242135055Hans Havermann12/2020
5505k(198476)135054Robert Price07/2020
550632461^14470+14470^32461135053Hans Havermann12/2020
550731353^20288+20288^31353135045Hans Havermann12/2020
55085*10^135019+77135020Robert Price12/2018
5509(10^135011+719)/9135011Serge Batalov12/2014
5510(197*10^134978+7)/3134980Robert Price12/2020
55112^448386-2786261134978Enzo Doria03/2016
551226480^30517-30517^26480134975Frank Doornink03/2024
5513(73*10^134939+143)/9134940Robert Price07/2019
551433957^9392+9392^33957134903Hans Havermann12/2020
55152^448122+20809134899Enzo Doria08/2023
55162^448113-113949134896Enzo Doria11/2014
551730958^22755+22755^30958134887Hans Havermann12/2020
55182^447888-2786639134828Enzo Doria03/2016
55192^447870-396765134823Enzo Doria07/2013
552010^(2*67404+1)-10^67404-1134809Robert Price07/2023
55212^447766-21791134791Enzo Doria07/2013
5522(19*10^134786-49)/3134787Robert Price05/2019
5523Phi(202173,10)/10064306514895399941409134758Makoto Kamada05/2019
5524(23*2^447647+1)/155134755Lelio R Paula07/2015
55252^447552-1019134727Yves Minet02/2014
5526(2*10^134720-41)/3134720Robert Price02/2018
5527(25*10^134695-97)/9134696Robert Price01/2022
55282^447437-113569134692Enzo Doria08/2014
55292^447426-65134689Lelio R Paula08/2017
55302^447357-2797573134668Enzo Doria04/2016
55312^447278+93134645Lelio R Paula08/2017
553233193^11370+11370^33193134623Hans Havermann12/2020
553330736^23979+23979^30736134619Hans Havermann11/2020
55342^447094-113193134589Enzo Doria07/2014
55353^282041-9934134568Enzo Doria05/2014
55362^447019-109039134567Enzo Doria04/2014
553731376^19437+19437^31376134561Hans Havermann12/2020
55382^446990-22041134558Enzo Doria07/2013
5539123^64370+122134528Karsten Bonath04/2018
554030100^29461+29461^30100134525Hans Havermann11/2020
554131251^20158+20158^31251134519Hans Havermann11/2020
55422^446782-39701134495Enzo Doria09/2015
554331817^16858+16858^31817134485Hans Havermann12/2020
554432448^13937+13937^32448134471Hans Havermann12/2020
55455^192321+3^192321-1134427Jon Grantham08/2023
55462^446494-16485134409Enzo Doria04/2013
554730042^29785+29785^30042134408Hans Havermann12/2020
554829504^30069-30069^29504134405Norbert Schneider12/2014
55492^446441+65134393Lelio R Paula08/2017
5550(10^134385+719)/9134385Serge Batalov12/2014
555130043^29688+29688^30043134370Hans Havermann12/2020
5552(2*10^134364+529)/9134364Robert Price01/2018
555334657^7512+7512^34657134323Hans Havermann11/2020
5554(13*2^446187-1)/661134314Lelio R Paula07/2015
55555^192103+3^192103+2^192103+1134275Matthias Baur12/2019
555642035^1564+1564^42035134270Hans Havermann12/2020
5558(2^446022-7)/339134264Lelio R Paula07/2015
555730621^24248+24248^30621134264Hans Havermann12/2020
555930341^26562+26562^30341134237Hans Havermann11/2020
5560(189^58967-1)/188134234Anonymous06/2024
556110^134209+99867134210Patrick De Geest05/2021
556210^134209-80000001134209Robert Price04/2021
556310^134209-323283134209Patrick De Geest05/2021
556429976^29953+29953^29976134186Hans Havermann12/2020
556535038^6755+6755^35038134183Hans Havermann12/2020
556663^74568+2134174Lelio R Paula06/2017
55672^445671-22071134161Enzo Doria07/2013
5568532^49205+49205^532134129Norbert Schneider02/2019
556936453^4780+4780^36453134127Hans Havermann04/2021
5570(28*10^134122-1)/9134123Serge Batalov10/2014
55712^445515-113859134114Enzo Doria10/2014
5573(22*10^134111-37)/3134112Robert Price04/2019
557231083^20636+20636^31083134112Hans Havermann04/2021
55743*2^445478+5134103Jon Grantham07/2023
557531622^17379+17379^31622134079Hans Havermann04/2021
55765*2^445380-3134074Jon Grantham07/2023
5577(6*32^89076+4241)/31134073Eric Chen11/2023
5578(277*10^134059-7)/9134061Robert Price02/2022
55792^445328-216917134058Enzo Doria05/2014
55802^445202+1874899134020Enzo Doria06/2016
55815^191739-3^191739-1134020Jon Grantham08/2023
5582(35*10^134003-89)/9134004Robert Price02/2022
5583(13*2^445102+1)/17133989Lelio R Paula07/2015
5584(35*10^133979-593)/9133980Robert Price07/2018
55852*10^133955+51133956Robert Price05/2018
5586(49*10^133952+437)/9133953Robert Price09/2021
55872^444964-113639133948Enzo Doria08/2014
558831811^16240+16240^31811133943Hans Havermann04/2021
558910^133902+167841133903Patrick De Geest05/2021
559128118^30097-30097^28118133902Norbert Schneider01/2015
559010^133902-100001133902Robert Price07/2020
55922^444784-113859133894Enzo Doria10/2014
5593(132^63127-1)/131133864Anonymous06/2024
559432303^13914+13914^32303133846Hans Havermann04/2021
5595(29^91493-3^91493)/26133798Robert Price06/2025
5596(2276213*2^444444+1)/3133797Alex_soldier11/2022
5597(1403559*2^444444+1)/5133797Alex_soldier11/2022
5598(1209887*2^444444+1)/9133797Alex_soldier11/2022
5599(608239*2^444444+1)/25133796Alex_soldier11/2022
5600(1824587*2^444444+1)/27133796Alex_soldier11/2022
5601(40795*2^444444+1)/7133795Alex_soldier11/2022
560230739^22458+22458^30739133757Hans Havermann04/2021
560334942^6721+6721^34942133739Hans Havermann04/2021
5604(3^280229-1)/1120918133698Aurel Gibier03/2025
5605(2^444046+100280245065)133672Paul Bourdelais05/2022
560634792^6935+6935^34792133638Hans Havermann04/2021
5607(266*10^133603+1)/3133605Robert Price04/2020
560832261^13842+13842^32261133600Hans Havermann04/2021
5609(89*10^133580+1)/9133581Serge Batalov05/2010
5610(134*10^133573-11)/3133575Robert Price01/2022
561126726^30173-30173^26726133574Frank Doornink03/2024
56122^443721+39527133574Enzo Doria11/2024
561362^74521-61^74521133571Robert Price05/2013
5614(182*10^133543+1)/3133545Robert Price02/2020
5615(103*10^133535+11)/3133537Robert Price01/2021
561632589^12520+12520^32589133537Hans Havermann03/2021
56172^443590-431651133534Maxim Gerspach08/2026
5618L(638839)/274700771133502Serge Batalov07/2024
561934516^7373+7373^34516133496Hans Havermann04/2021
56208*10^133487-37133488Robert Price03/2022
562130135^26882+26882^30135133482Hans Havermann04/2021
56222^443198-1867301133416Enzo Doria03/2016
562327^93192+26133392Anonymous09/2024
5624(19*10^133390+101)/3133391Robert Price09/2019
5625(71^72043-1)/70133369Paul Bourdelais09/2017
5626(17508!^2+1)/(1453817*25094393)133366Michael Porter09/2025
562736117^4910+4910^36117133311Hans Havermann04/2021
56282^442799+1874633133296Enzo Doria06/2016
5629L(637751)133283Henri Lifchitz09/2008
5630109^65410-2133269Lelio R Paula10/2017
56312^442688-113489133263Enzo Doria08/2014
5632(7*2^442640-1)/783133246Lelio R Paula07/2015
5633(9*2^442463+1)/17441133192Lelio R Paula07/2015
56342^442437-1849993133187Enzo Doria08/2015
56352^442430-2791721133185Enzo Doria03/2016
5636(13*2^442428-1)/309133183Lelio R Paula07/2015
563729959^27870+27870^29959133172Hans Havermann03/2021
5638(25*2^442379-1)/71133169Lelio R Paula07/2015
56392^442368+213691133167Enzo Doria09/2023
564034240^7737+7737^34240133145Hans Havermann03/2021
5641452^50145+50145^452133142Norbert Schneider09/2020
5642(355^52201-1)/354133122Tom Wu08/2024
5643(3^278981-1)/14507014133101Paul Vanderveen05/2025
564430659^21796+21796^30659133011Hans Havermann04/2021
564533276^9935+9935^33276133010Hans Havermann04/2021
564630111^26122+26122^30111133001Hans Havermann04/2021
564730790^20869+20869^30790132998Hans Havermann04/2021
5649(2^441799+78557)/5132995Lelio R Paula07/2015
56488*10^132994-27132995Robert Price10/2021
5650(109*10^132992+11)/3132994Robert Price06/2022
56512^441781-2787883132990Enzo Doria03/2016
5652fibonacci(636232)+4132965Jon Grantham08/2023
5653(3*2^441685+1)/749132959Lelio R Paula07/2015
56542^441618+37132941Lelio R Paula08/2017
565534857^6514+6514^34857132940Hans Havermann04/2021
565634065^7988+7988^34065132937Hans Havermann04/2021
565735571^5452+5452^35571132914Hans Havermann04/2021
56582^441521-113575132912Enzo Doria08/2014
56597*10^132884-99132885Robert Price06/2019
566026987^29988-29988^26987132882Frank Doornink03/2024
5661(103*10^132879+17)/3132881Robert Price08/2020
56622^441396-65132874Lelio R Paula08/2017
566333350^9633+9633^33350132859Hans Havermann04/2021
56642^441330+1871959132854Enzo Doria05/2016
566525772^30111-30111^25772132825Frank Doornink02/2024
56662^441063+383132774Lelio R Paula06/2012
5667(10^132753+7)/17/19132751Alfred Reich06/2021
5668(22*10^132746+53)/3132747Robert Price07/2019
5669(77*10^132744-149)/9132745Robert Price03/2022
5670(22*10^132732+119)/3132733Robert Price04/2021
56712^440846+1870909132708Enzo Doria05/2016
5672(948^44579-1)/947132701Jinyuan Wang04/2023
56732^440656-113489132651Enzo Doria08/2014
5674numbpart(14180123587)132646Serge Batalov04/2017
567532950^10591+10591^32950132622Hans Havermann04/2021
567633302^9597+9597^33302132614Hans Havermann04/2021
5677(19*10^132550+191)/3132551Robert Price05/2019
5678(2^440399-1)/(16210820281161978209*31518475633*880799)132538Dario Alpern01/2015
5679(38^83891+1)/39132529Robert Price09/2013
56802*10^132493-43132494Robert Price04/2018
568131352^16809+16809^31352132480Hans Havermann04/2021
5682(418*10^132441+23)/9132443Robert Price02/2020
56832^439931-21132433Lelio R Paula08/2017
568447^79201-46^79201132432Robert Price10/2012
56852^439897-113653132423Enzo Doria08/2014
568635505^5362+5362^35505132410Hans Havermann03/2021
568730079^25222+25222^30079132402Hans Havermann04/2021
5688(5*2^439822+1)/9132400Lelio R Paula06/2015
5689(695*10^132356+7)/9132358Robert Price12/2021
5690(112*10^132337-1)/3132339Serge Batalov12/2014
56912^439576-113247132326Enzo Doria07/2014
5692(7^156589-1)/65346468774132323Paul Vanderveen05/2025
569330059^25230+25230^30059132318Hans Havermann04/2021
56942^439497-29143132302Enzo Doria07/2015
56952^439409-114193132276Enzo Doria12/2014
5696(39^83137+2^83137)/41132275Robert Price12/2024
5697(44*10^132233-233)/9132234Robert Price01/2019
569825507^30000-30000^25507132200Frank Doornink02/2024
56999*10^132148-7132149Robert Price09/2015
5700V(790390)132144Serge Batalov07/2024
5701(47*10^132125-119)/9132126Robert Price05/2019
57022^438900+214051132123Enzo Doria10/2023
57032^438845+1870217132106Enzo Doria05/2016
5704Phi(293229,-5)132106Henri Lifchitz02/2026
57052^438789+87855132089Lelio R Paula01/2016
57062^438774-2786411132085Enzo Doria03/2016
57072^438755-1848205132079Enzo Doria07/2015
570830502^21381+21381^30502132075Hans Havermann04/2021
57092^438739-112087132074Enzo Doria06/2014
5710(588859*29^90289-19)/28132043Eric Chen06/2025
5711(2^438438+100280245065)131983Paul Bourdelais05/2022
571235872^4777+4777^35872131979Hans Havermann04/2021
571331198^16945+16945^31198131938Hans Havermann03/2021
571413907#+(318259#)/(13907#)131923Makoto Morimoto10/2017
5715L(631181)131910Henri Lifchitz09/2008
5716(47*10^131886-119)/9131887Robert Price05/2019
57175*2^438096-3131881Jon Grantham07/2023
5718(3*2^438121+1)/4308193883131879Lelio R Paula06/2015
57192^438079-1863877131875Enzo Doria03/2016
5720(16*10^131872-37)/3131873Robert Price05/2021
5721(2^438067+5)/329131869Lelio R Paula06/2015
57222^437908-113855131824Enzo Doria09/2014
57232^437884-286349131817Enzo Doria07/2015
572415^112072+14131807Alfred Reich10/2023
57255^188558+4131797Tyler NeSmith05/2021
5726(11*10^131784-17)/3131785Robert Price06/2018
5727(166^59357-1)/165131777Anonymous06/2024
57284*10^131719-93131720Robert Price07/2020
572931629^14606+14606^31629131720Hans Havermann04/2021
57303^276062-112292131716Enzo Doria07/2014
57312^437539+2025131713Henri Lifchitz01/2025
573211*31^88313+322688131708Eric Chen05/2024
5733(7*10^131682+89)/3131683Robert Price08/2020
573429512^28969+28969^29512131681Hans Havermann03/2021
57352^437343+75953131654Enzo Doria04/2016
573635^85243-34^85243131621Robert Price05/2012
5737(28*10^131586+59)/3131587Robert Price05/2021
5738(59*10^131575+391)/9131576Robert Price03/2021
5739Phi(51051,-17#)131513Henri Lifchitz12/2025
574039984^1945+1945^39984131505Hans Havermann03/2021
574125842^29801-29801^25842131492Frank Doornink03/2024
574228592^29505-29505^28592131482Frank Doornink05/2024
574325647^29818-29818^25647131469Frank Doornink02/2024
5744(203*10^131457+1)/3131459Robert Price03/2020
57457*10^131421-41131422Robert Price08/2021
574687309^32+32^87309131414Hans Havermann03/2021
5747(68^71713+1)/69131413Paul Bourdelais09/2017
57482^436521+224885131406Enzo Doria07/2024
5749(650*10^131391+43)/9131393Tyler Busby01/2023
57502^436451+1884713131385Enzo Doria03/2017


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: September, 29 2026 09:32 (Time in France)

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