PRP Records

Probable Primes Top 10000

(302984 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 ?
5502(2^441799+78557)/5132995Lelio R Paula07/2015
55018*10^132994-27132995Robert Price10/2021
5503(109*10^132992+11)/3132994Robert Price06/2022
55042^441781-2787883132990Enzo Doria03/2016
5505fibonacci(636232)+4132965Jon Grantham08/2023
5506(3*2^441685+1)/749132959Lelio R Paula07/2015
55072^441618+37132941Lelio R Paula08/2017
550834857^6514+6514^34857132940Hans Havermann04/2021
550934065^7988+7988^34065132937Hans Havermann04/2021
551035571^5452+5452^35571132914Hans Havermann04/2021
55112^441521-113575132912Enzo Doria08/2014
55127*10^132884-99132885Robert Price06/2019
551326987^29988-29988^26987132882Frank Doornink03/2024
5514(103*10^132879+17)/3132881Robert Price08/2020
55152^441396-65132874Lelio R Paula08/2017
551633350^9633+9633^33350132859Hans Havermann04/2021
55172^441330+1871959132854Enzo Doria05/2016
551825772^30111-30111^25772132825Frank Doornink02/2024
55192^441063+383132774Lelio R Paula06/2012
5520(10^132753+7)/17/19132751Alfred Reich06/2021
5521(22*10^132746+53)/3132747Robert Price07/2019
5522(77*10^132744-149)/9132745Robert Price03/2022
5523(22*10^132732+119)/3132733Robert Price04/2021
55242^440846+1870909132708Enzo Doria05/2016
5525(948^44579-1)/947132701Jinyuan Wang04/2023
55262^440656-113489132651Enzo Doria08/2014
5527numbpart(14180123587)132646Serge Batalov04/2017
552832950^10591+10591^32950132622Hans Havermann04/2021
552933302^9597+9597^33302132614Hans Havermann04/2021
5530(19*10^132550+191)/3132551Robert Price05/2019
5531(2^440399-1)/(16210820281161978209*31518475633*880799)132538Dario Alpern01/2015
5532(38^83891+1)/39132529Robert Price09/2013
55332*10^132493-43132494Robert Price04/2018
553431352^16809+16809^31352132480Hans Havermann04/2021
5535(418*10^132441+23)/9132443Robert Price02/2020
55362^439931-21132433Lelio R Paula08/2017
553747^79201-46^79201132432Robert Price10/2012
55382^439897-113653132423Enzo Doria08/2014
553935505^5362+5362^35505132410Hans Havermann03/2021
554030079^25222+25222^30079132402Hans Havermann04/2021
5541(5*2^439822+1)/9132400Lelio R Paula06/2015
5542(695*10^132356+7)/9132358Robert Price12/2021
5543(112*10^132337-1)/3132339Serge Batalov12/2014
55442^439576-113247132326Enzo Doria07/2014
5545(7^156589-1)/65346468774132323Paul Vanderveen05/2025
554630059^25230+25230^30059132318Hans Havermann04/2021
55472^439497-29143132302Enzo Doria07/2015
55482^439409-114193132276Enzo Doria12/2014
5549(39^83137+2^83137)/41132275Robert Price12/2024
5550(44*10^132233-233)/9132234Robert Price01/2019
555125507^30000-30000^25507132200Frank Doornink02/2024
55529*10^132148-7132149Robert Price09/2015
5553V(790390)132144Serge Batalov07/2024
5554(47*10^132125-119)/9132126Robert Price05/2019
55552^438900+214051132123Enzo Doria10/2023
55562^438845+1870217132106Enzo Doria05/2016
5557Phi(293229,-5)132106Henri Lifchitz02/2026
55582^438789+87855132089Lelio R Paula01/2016
55592^438774-2786411132085Enzo Doria03/2016
55602^438755-1848205132079Enzo Doria07/2015
556130502^21381+21381^30502132075Hans Havermann04/2021
55622^438739-112087132074Enzo Doria06/2014
5563(588859*29^90289-19)/28132043Eric Chen06/2025
5564(2^438438+100280245065)131983Paul Bourdelais05/2022
556535872^4777+4777^35872131979Hans Havermann04/2021
556631198^16945+16945^31198131938Hans Havermann03/2021
556713907#+(318259#)/(13907#)131923Makoto Morimoto10/2017
5568L(631181)131910Henri Lifchitz09/2008
5569(47*10^131886-119)/9131887Robert Price05/2019
55705*2^438096-3131881Jon Grantham07/2023
5571(3*2^438121+1)/4308193883131879Lelio R Paula06/2015
55722^438079-1863877131875Enzo Doria03/2016
5573(16*10^131872-37)/3131873Robert Price05/2021
5574(2^438067+5)/329131869Lelio R Paula06/2015
55752^437908-113855131824Enzo Doria09/2014
55762^437884-286349131817Enzo Doria07/2015
557715^112072+14131807Alfred Reich10/2023
55785^188558+4131797Tyler NeSmith05/2021
5579(11*10^131784-17)/3131785Robert Price06/2018
5580(166^59357-1)/165131777Anonymous06/2024
55814*10^131719-93131720Robert Price07/2020
558231629^14606+14606^31629131720Hans Havermann04/2021
55833^276062-112292131716Enzo Doria07/2014
55842^437539+2025131713Henri Lifchitz01/2025
558511*31^88313+322688131708Eric Chen05/2024
5586(7*10^131682+89)/3131683Robert Price08/2020
558729512^28969+28969^29512131681Hans Havermann03/2021
55882^437343+75953131654Enzo Doria04/2016
558935^85243-34^85243131621Robert Price05/2012
5590(28*10^131586+59)/3131587Robert Price05/2021
5591(59*10^131575+391)/9131576Robert Price03/2021
5592Phi(51051,-17#)131513Henri Lifchitz12/2025
559339984^1945+1945^39984131505Hans Havermann03/2021
559425842^29801-29801^25842131492Frank Doornink03/2024
559528592^29505-29505^28592131482Frank Doornink05/2024
559625647^29818-29818^25647131469Frank Doornink02/2024
5597(203*10^131457+1)/3131459Robert Price03/2020
55987*10^131421-41131422Robert Price08/2021
559987309^32+32^87309131414Hans Havermann03/2021
5600(68^71713+1)/69131413Paul Bourdelais09/2017
56012^436521+224885131406Enzo Doria07/2024
5602(650*10^131391+43)/9131393Tyler Busby01/2023
56032^436451+1884713131385Enzo Doria03/2017
56042^436365+35131359Robert Price11/2015
56062^436300+1866871131340Enzo Doria03/2016
5605(7*10^131339+179)/3131340Robert Price09/2018
560714^114592-3131338Paul Bourdelais12/2020
560836197^4236+4236^36197131285Hans Havermann04/2021
5609(37*10^131270+341)/9131271Robert Price08/2018
561029863^24790+24790^29863131227Hans Havermann03/2021
5611(5*10^131223-29)/3131224Robert Price03/2018
561229524^27825+27825^29524131218Hans Havermann03/2021
5613(23*2^435891-1)/699131215Lelio R Paula07/2015
5614(11*2^435879+1)/3337131211Lelio R Paula06/2015
561530639^19136+19136^30639131192Hans Havermann04/2021
5616(2^435808+1)/641/6700417131182Lelio R Paula02/2012
5617(2^435808+1)/4294967297131182Serge Batalov12/2016
56182^435773+1875557131181Enzo Doria06/2016
5620(16*10^131180+167)/3131181Robert Price06/2019
5619(26*10^131180-77)/3131181Robert Price11/2019
5621(25*10^131144-7)/9131145Robert Price05/2018
562229299^29358-29358^29299131138Norbert Schneider03/2022
56232^435612-2789939131133Enzo Doria12/2015
562433976^7231+7231^33976131121Hans Havermann03/2021
562533715^7746+7746^33715131121Hans Havermann03/2021
562666^72047-65^72047131093Robert Price09/2013
5627(5*10^131090+37)/3131091Robert Price03/2018
56282^435468+75631131089Enzo Doria04/2016
562937^83588-2131083Lelio R Paula08/2015
5630(4^217720+11)/3131081Robert Price02/2017
563130407^20448+20448^30407131074Hans Havermann04/2021
5632(22*10^131070+179)/3131071Robert Price02/2022
563328831^29388-29388^28831131067Frank Doornink05/2024
563429487^27836+27836^29487131059Hans Havermann04/2021
563529962^23615+23615^29962131030Hans Havermann03/2021
56362^435202-113193131009Enzo Doria07/2014
563741705^1384+1384^41705131002Hans Havermann04/2021
56389*10^130998-19130999Robert Price07/2019
563936243^4108+4108^36243130969Hans Havermann04/2021
5640(32^86981-5^86981)/27130919Robert Price04/2026
5641(445^49433+1)/446130914Jinyuan Wang05/2024
5642floor((sqrt(5)-1)/2*10^130911)130911Serge Batalov06/2017
56432^434835-111937130899Enzo Doria05/2014
5644(62*10^130895-629)/9130896Robert Price07/2021
56452^434807+225130890Henri Lifchitz11/2024
56462^434685+72257130854Enzo Doria04/2016
5647Phi(64497,-1105)130853Henri Lifchitz12/2025
5648(7*10^130825+113)/3130826Robert Price02/2018
56492^434539-29317130810Enzo Doria07/2015
5650(74*10^130791+637)/9130792Robert Price01/2022
56512^434469-114259130789Enzo Doria01/2015
5652(5*10^130763+103)/9130763Robert Price04/2022
56532^434246+33130722Robert Price11/2015
565430156^21599+21599^30156130710Hans Havermann04/2021
5655(41^81041-3^81041)/38130701Robert Price09/2025
5656(17*10^130695-161)/9130696Robert Price02/2021
565730513^19148+19148^30513130661Hans Havermann03/2021
565829736^24761+24761^29736130654Hans Havermann04/2021
56599*10^130638+41130639Robert Price08/2020
56602^433911-91130621Lelio R Paula06/2017
566130786^17449+17449^30786130588Hans Havermann03/2021
56622^433744-114419130570Enzo Doria02/2015
56642^433708+1869451130560Enzo Doria05/2016
56632^433710+93130560Lelio R Paula06/2017
56657*10^130535-27130536Robert Price11/2022
5666(17^130533)%(10^130533)130533Henri Lifchitz05/2025
5667(9629^32768+1)/120501441265666130520Kellen Shenton05/2021
5668804*34^85220+713130516Eric Chen08/2023
5669(29*2^433547-1)/27130511Lelio R Paula06/2015
56703^273521+10130503Tyler NeSmith01/2021
567141659^1356+1356^41659130487Hans Havermann03/2021
56724*10^130480+9130481Robert Price05/2015
5673(23*2^433449-1)/75130481Lelio R Paula06/2015
56743*2^433422+5130474Jon Grantham07/2023
5675(23*2^433334-1)/3731130445Lelio R Paula06/2015
5676(31*10^130414-49)/9130415Robert Price11/2021
567726462^29485-29485^26462130402Frank Doornink03/2024
567833481^7848+7848^33481130401Hans Havermann03/2021
5679(17*10^130393+7)/3130394Robert Price06/2023
5680(22*10^130392+203)/9130393Robert Price10/2021
568129773^23950+23950^29773130386Hans Havermann04/2021
56822^433023-113497130353Enzo Doria08/2014
568331175^15178+15178^31175130350Hans Havermann04/2021
56842^433002+1179379130347Enzo Doria06/2016
56852^432974+19130339Robert Price08/2015
568631903^12168+12168^31903130331Hans Havermann04/2021
56872^432917+22217130322Enzo Doria09/2023
568829387^27112+27112^29387130278Hans Havermann04/2021
56892^432768+213181130277Enzo Doria09/2023
569029577^25370+25370^29577130267Hans Havermann04/2021
569131738^12685+12685^31738130231Hans Havermann03/2021
569244235^878+878^44235130206Hans Havermann04/2021
569332160^11171+11171^32160130187Hans Havermann04/2021
569429489^25956+25956^29489130172Hans Havermann04/2021
5695(2^432457-1)/1672739247834685086279697130159Tony Prest / Never Odd Or Even09/2013
569633005^8766+8766^33005130133Hans Havermann04/2021
5697(35*10^130132-611)/9130133Robert Price02/2022
5698(444^49408+1)/(444^256+1)130125Martin Hopf12/2023
56992^432217+41130111Lelio R Paula06/2017
5700(2^216089*(2^216091-1)-339)/25130098Makoto Morimoto03/2017
5701((2^216091+1066)^2+(2^216091+1066)+41)/47/2069130095Makoto Morimoto05/2016
570297^65480-2130094Lelio R Paula05/2017
570336007^4102+4102^36007130094Hans Havermann04/2021
57044*10^130088-89130089Robert Price11/2018
57052^432117-113215130081Enzo Doria07/2014
5706(4*10^130080+41)/9130080Serge Batalov11/2022
57079583*29^88890+736129997Eric Chen06/2025
57082^431804+72511129986Enzo Doria04/2016
570927902^29237-29237^27902129978Frank Doornink03/2024
571033^85579+32129953Alfred Reich10/2025
5711(2313^38809-1)/(2313^197-1)129898Ryan Propper11/2023
5712(13*10^129896+137)/3129897Robert Price06/2021
5713(13*10^129890+71)/3129891Robert Price06/2021
571429048^29101-29101^29048129882Norbert Schneider03/2022
571537832^2709+2709^37832129871Hans Havermann04/2021
571631055^15184+15184^31055129853Hans Havermann04/2021
5718(3^272141-3^136071+1)/7129844Serge Batalov03/2014
5717Phi(1632846L,3)129844Anonymous03/2025
571931385^13702+13702^31385129833Hans Havermann04/2021
5720(13*10^129826+41)/9129827Tyler Busby02/2023
572128901^29102-29102^28901129822Norbert Schneider03/2022
5722(47*10^129789-119)/9129790Robert Price05/2019
5723(9*2^431141+1)/17129787Lelio R Paula06/2015
572425999^29384-29384^25999129730Frank Doornink03/2024
572525771^29408-29408^25771129723Frank Doornink02/2024
5726(166*10^129712+17)/3129714Robert Price07/2022
5727(29*2^430881-1)/21129709Lelio R Paula06/2015
57282^430807+1869563129686Enzo Doria05/2016
57292^430721-21429129660Enzo Doria07/2013
5730Phi(326081,3)129648Henri Lifchitz12/2025
5731(4*10^129618+89)/3129619Robert Price08/2021
5732(142^60223-1)/141129616Anonymous06/2024
5733(10^129587-7^129587)/3129587Jon Grantham07/2023
57342^430415-276271129568Enzo Doria07/2015
573532282^10311+10311^32282129558Hans Havermann04/2021
573629486^24741+24741^29486129545Hans Havermann04/2021
5737(29*10^129543+313)/9129544Robert Price04/2021
573837095^3104+3104^37095129533Hans Havermann04/2021
573931132^14459+14459^31132129514Hans Havermann04/2021
574032582^9435+9435^32582129506Hans Havermann03/2021
574130442^17953+17953^30442129505Hans Havermann03/2021
5742(199*10^129487-7)/3129489Robert Price05/2020
57432^430142-2791721129486Enzo Doria03/2016
5744(7*10^129472-13)/3129473Robert Price07/2018
5745(8*10^129469+79)/3129470Robert Price10/2020
574631678^12213+12213^31678129463Hans Havermann04/2021
574710620^32143-10619^32143129412Norbert Schneider08/2023
5748(772*10^129406-7)/9129408Robert Price06/2022
5749(535^47431-1)/534129406Tom Wu09/2024
5750((3*20425-8193)*F(618977)-(20425-8193)*L(618977))/2129363Yaroslav Berezhko03/2025


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: May, 02 2026 10:02 (Time in France)

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