PRP Records

Probable Primes Top 10000

(300940 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(5*10^122592+91)/3122593Robert Price04/2018
550236751^2166+2166^36751122589Hans Havermann03/2021
5503(85*10^122585-1)/3122587Robert Price02/2020
550429368^14931+14931^29368122585Hans Havermann03/2021
55052^407179-112075122574Enzo Doria06/2014
5506(21*2^407131+1)/207517523122552Lelio R Paula04/2014
5507(66^67349+1)/67122543Paul Bourdelais09/2017
5508(646*10^122533+11)/9122535Robert Price10/2021
55092^407008-1867919122522Enzo Doria04/2016
551011^117642-300122512Enzo Doria10/2012
5511(F(3*97700+1)^2+L(3*97700+1)^2)/2122509Henri Lifchitz10/2017
55122^406949+72197122504Enzo Doria04/2016
5513(19*10^122501+149)/3122502Robert Price05/2019
551428632^18977+18977^28632122495Hans Havermann03/2021
551531815^7076+7076^31815122481Hans Havermann03/2021
55162^406826-65122467Lelio R Paula11/2013
55172^406821-2797363122466Enzo Doria04/2016
5518(7*10^122456-331)/9122456Robert Price03/2022
55192^406758-17122447Lelio R Paula11/2013
552029941^12282+12282^29941122437Hans Havermann03/2021
5521(30^82883-1)/29122427Robert Price12/2011
552227496^27577+27577^27496122422Norbert Schneider12/2020
552328732^18215+18215^28732122411Hans Havermann03/2021
5524(2^406583-1)/813167122388Jens K. Andersen02/2009
55254*10^122377+19122378Robert Price10/2018
552628227^21634+21634^28227122368Hans Havermann03/2021
5527Phi(246362,10)122365Makoto Kamada09/2019
55283*10^122345-97122346Robert Price07/2018
552997^61575-2122336Lelio R Paula12/2014
55302*10^122319+47122320Robert Price12/2021
5531208^52765+52765^208122313Norbert Schneider11/2020
55332^406298+2799109122308Enzo Doria04/2016
55322^406296+213691122308Enzo Doria09/2023
55347*10^122294+57122295Robert Price06/2019
5535(27*2^406241-1)/10277122289Lelio R Paula04/2014
55362^406229-1849993122288Enzo Doria08/2015
55373*10^122274+7122275Robert Price07/2015
55382^406117+1876577122254Enzo Doria07/2016
553929308^14835+14835^29308122253Hans Havermann03/2021
554028119^22268+22268^28119122253Hans Havermann03/2021
554132167^6312+6312^32167122240Hans Havermann03/2021
55423^256199-2^256199122238Mike Oakes06/2005
554327678^26053+26053^27678122223Hans Havermann03/2021
55442^405992-78557122216Jorge Menendez03/2018
5545(8*10^122203+43)/3122204Robert Price06/2018
5546(58*10^122170+329)/9122171Robert Price05/2019
55472^405774+179149122151Enzo Doria06/2016
55482^405693+20417122126Enzo Doria07/2023
5549(218*10^122109+7)/9122111Robert Price06/2022
555029189^15246+15246^29189122103Hans Havermann03/2021
555234*10^122082-9122084Robert Price06/2020
555133442^4473+4473^33442122084Hans Havermann03/2021
55535*10^122082+41122083Robert Price03/2019
555431849^6808+6808^31849122078Hans Havermann03/2021
55562^405514-3311122072Yves Minet12/2014
55572^405514-115511122072Enzo Doria07/2015
555523*10^122070-7122072Robert Price02/2020
55582^405422-113261122045Enzo Doria07/2014
555995^61698-61698^95122022Norman Luhn10/2024
55602^405173+71237121970Enzo Doria04/2016
5561fibonacci(583574)+2121960Jon Grantham08/2023
5562(154*10^121953+17)/9121955Robert Price06/2022
5563(34*10^121924+191)/9121925Robert Price08/2021
5564(2^405016+1)/257121920Lelio R Paula04/2014
556528557^18590+18590^28557121918Hans Havermann03/2021
556628641^18002+18002^28641121877Hans Havermann03/2021
55672^404858+71329121875Enzo Doria04/2016
55682^404813-114703121861Enzo Doria04/2015
55692^404764+77791121847Enzo Doria05/2016
557028830^16841+16841^28830121847Hans Havermann03/2021
5571(4*10^121825+89)/3121826Robert Price08/2021
5572317^48694+48694^317121787Norbert Schneider08/2015
55732^404536-115259121778Enzo Doria06/2015
55742^404501-631121767Yves Minet07/2012
55755*10^121764-69121765Robert Price02/2021
557628236^20485+20485^28236121738Hans Havermann02/2021
5577(382*10^121694-31)/9121696Robert Price06/2022
557863^67620+2121672Lelio R Paula08/2015
5579(25*34^79445-28062367)/33121669Eric Chen08/2023
5580(13*33^80110-121453)/32121648Eric Chen12/2023
5581(16*10^121633+167)/3121634Robert Price06/2019
558229955^11494+11494^29955121632Hans Havermann02/2021
5583(17*10^121621+1)/9121622Serge Batalov05/2010
558431088^8163+8163^31088121612Hans Havermann02/2021
5585(15*2^403912+1)/271121589Lelio R Paula05/2014
5586(211^52301-1)/210121560Anonymous04/2024
5587(10^121543-79)/3121543Robert Price01/2018
5588801^41852-41852^801121523Norman Luhn10/2024
55892^403676+76831121519Enzo Doria05/2016
5590715^42564-42564^715121491Norman Luhn10/2024
5591(7*10^121487+143)/3121488Robert Price03/2018
559227965^22086+22086^27965121484Hans Havermann02/2021
5593(893*10^121470+7)/9121472Robert Price06/2021
5594(206*10^121462-11)/3121464Robert Price02/2022
559526282^27481-27481^26282121457Frank Doornink03/2024
5596(77*10^121455+67)/9121456Robert Price12/2021
55972^403363-113635121425Enzo Doria08/2014
559825531^27552-27552^25531121424Frank Doornink02/2024
5599(17*10^121418-113)/3121419Robert Price06/2021
56002^403336-1861469121417Enzo Doria03/2016
560127929^22186+22186^27929121382Hans Havermann02/2021
5602p(24442)#/2-64121381Robert Price04/2017
560311^116555-720121380Enzo Doria11/2012
5604(873^41263+1)/874121353Jinyuan Wang12/2024
56052^403100-461267121346Enzo Doria07/2015
56062^403093-112213121344Enzo Doria06/2014
560729404^13385+13385^29404121340Hans Havermann02/2021
560828106^20745+20745^28106121332Hans Havermann02/2021
5609(316^48539+1)/317121330Eric Chen10/2017
5610(23*10^121320-71)/3121321Robert Price07/2020
56112^403004+1866361121317Enzo Doria03/2016
56122^402953+89121301Lelio R Paula10/2013
56132^402944-2788319121299Enzo Doria03/2016
5614(44*10^121297-719)/9121298Robert Price12/2018
5615(27*2^402865+1)/5121276Lelio R Paula04/2014
56162^402828-113183121264Enzo Doria07/2014
5617(17*10^121242+1)/9121243Serge Batalov05/2010
5618(15*2^402757+1)/101121242Lelio R Paula05/2014
5619282^49477-49477^282121231Norman Luhn10/2024
56212^402715+1874223121230Enzo Doria06/2016
5620(35*10^121229-593)/9121230Robert Price07/2018
5622(91^61879+1)/92121222Paul Bourdelais09/2017
5623291^49190-49190^291121199Norman Luhn10/2024
562428719^16568+16568^28719121174Hans Havermann02/2021
56257*10^121144+9121145Robert Price09/2015
562627490^25467+25467^27490121121Hans Havermann02/2021
562734575^3182+3182^34575121106Hans Havermann02/2021
56285*10^121100-37121101Robert Price11/2021
5629F(579521)/516247738177121101Serge Batalov07/2024
563025592^27467-27467^25592121078Frank Doornink02/2024
563129954^10935+10935^29954120979Hans Havermann02/2021
563233585^3992+3992^33585120946Hans Havermann02/2021
563340296^1003+1003^40296120941Hans Havermann02/2021
56342^401725-113251120932Enzo Doria07/2014
5635(15*2^401677-1)/19120917Lelio R Paula05/2014
56362^401652+73711120910Enzo Doria04/2016
5637(2^401632+3)/79120902Lelio R Paula04/2014
563840450^973+973^40450120870Hans Havermann01/2021
5639(8*10^120851-11)/3120852Robert Price07/2023
564010^120841+88417120842Patrick De Geest04/2020
564110^120841-123456789120841Robert Price02/2020
564210^120841-176853120841Patrick De Geest04/2020
56432^401406-2791331120836Enzo Doria03/2016
5644(28^83497+1)/29120832Robert Price07/2013
5645(22*10^120828+161)/3120829Robert Price05/2019
56462^401369+1867367120825Enzo Doria03/2016
5647(5*10^120821+43)/3120822Robert Price12/2021
564826990^27263-27263^26990120808Frank Doornink03/2024
5649(10^120782+29)/3120782Serge Batalov12/2014
56502^401215-1657120778Yves Minet07/2014
56512^401159+53120761Lelio R Paula10/2013
565227782^22179+22179^27782120739Hans Havermann01/2021
5653242^50649-50649^242120738Norman Luhn09/2024
565432974^4585+4585^32974120730Hans Havermann02/2021
56552^401031-113047120723Enzo Doria07/2014
565630598^8813+8813^30598120713Hans Havermann02/2021
5657(71*10^120703-287)/9120704Robert Price09/2019
565825671^27370-27370^25671120687Frank Doornink02/2024
5659(29*2^400909-1)/303120685Lelio R Paula04/2014
566034793^2940+2940^34793120675Hans Havermann02/2021
566126028^27329-27329^26028120670Frank Doornink03/2024
5662(2^400846+538)/2120667Stefano Morozzi09/2020
5663(166*10^120654+11)/3120656Robert Price03/2021
566434066^3481+3481^34066120652Hans Havermann02/2021
56658*10^120637-27120638Robert Price10/2021
5666(2^400709+3546)/2120626Stefano Morozzi09/2020
5667(2^400700+3126)/2120623Stefano Morozzi09/2020
5668(2^400693+2634)/2120621Stefano Morozzi09/2020
56699*10^120617-61120618Robert Price06/2021
5670(29*10^120590-71)/3120591Robert Price07/2021
56712^400571-15120584Lelio R Paula10/2013
5672(10^120574+359)/9120574Serge Batalov12/2014
5673(8*10^120552-17)/9120552Serge Batalov11/2022
567427431^24810+24810^27431120550Hans Havermann02/2021
56752^400424-216413120540Enzo Doria04/2013
567629090^13911+13911^29090120531Hans Havermann02/2021
5677(2^400346+1722)/2120516Stefano Morozzi09/2020
567827899^20868+20868^27899120510Hans Havermann02/2021
567933740^3729+3729^33740120506Hans Havermann02/2021
5680(17*2^400200-1)/587120471Lelio R Paula05/2014
56812^400166+1874899120462Enzo Doria06/2016
5682(2^400165+1602)/2120462Stefano Morozzi09/2020
568337078^1771+1771^37078120438Hans Havermann02/2021
5684(2^400084+1638)/2120437Stefano Morozzi09/2020
5685(3*2^400045-1)/865120424Lelio R Paula04/2014
56862^399999+54173120412Norman Luhn08/2023
5687(2^399974+2790)/2120404Stefano Morozzi02/2021
56882^399966+73759120402Enzo Doria04/2016
5689(2^399961+2306)/2120400Stefano Morozzi02/2021
5690(112*10^120395-1)/3120397Serge Batalov12/2014
56922^399918-95120388Lelio R Paula04/2013
56912^399918+214009120388Enzo Doria10/2023
5693(28*10^120381-67)/3120382Robert Price10/2020
5694(49*10^120380-139)/9120381Robert Price03/2019
5695(2^399874+2194)/2120374Stefano Morozzi09/2020
56962^399792-1849259120350Enzo Doria08/2015
56979*10^120342-7120343Robert Price09/2015
5698(2^399751+786)/2120337Stefano Morozzi09/2020
5699(331*10^120332-7)/9120334Robert Price04/2022
5700(13*10^120306-37)/3120307Robert Price01/2019
5701(23*10^120299+37)/3120300Robert Price02/2022
570225935^27254-27254^25935120297Frank Doornink03/2024
5703(2^399604+3070)/2120293Stefano Morozzi09/2020
5704(2^399549+1062)/2120276Stefano Morozzi09/2020
57052^399526-1861721120270Enzo Doria11/2015
5706(10^(2*60126+1)+36*10^60126-1)/9120253Robert Price10/2015
570732016^5687+5687^32016120217Hans Havermann01/2021
5708(205*10^120212-1)/3120214Robert Price11/2021
57092^399322-2798111120208Enzo Doria04/2016
571030438^8867+8867^30438120163Hans Havermann02/2021
57113^251841-5*2^251841120159Jon Grantham08/2023
571372^64693-71^64693120157Robert Price03/2014
5712(17*10^120156-161)/9120157Robert Price02/2021
57142^399111-28489120145Enzo Doria08/2015
5715(2^399014+1318)/2120115Stefano Morozzi02/2021
571630254^9333+9333^30254120110Hans Havermann02/2021
57172^398972+6561120103Henri Lifchitz10/2024
571830882^7745+7745^30882120101Hans Havermann02/2021
57202^398877+105120074Donovan Johnson01/2006
5719(101*10^120072-87)/7120074Hans Havermann02/2015
5721(88^61751+1)/89120072Paul Bourdelais09/2017
5722U(686581)/4280145953120067Serge Batalov07/2024
57232^398710+57120024Lelio R Paula04/2013
5724(2^398698+1138)/2120020Stefano Morozzi09/2020
57252^398691-115057120018Enzo Doria06/2015
5726L(574219)120005Renaud Lifchitz03/2004
57272^398571+60413119982Yves Minet03/2011
572828623^15538+15538^28623119971Hans Havermann02/2021
5729p(24179)#/2-64119949Robert Price04/2017
57302^398448+1872001119945Enzo Doria05/2016
5731(10^119946*19-91)/6093119944Alfred Reich10/2023
5732(19*10^119946-91)/9/677119944Alfred Reich11/2023
5733(191*10^119941-17)/3119943Robert Price11/2021
5734634^42803+42803^634119938Norbert Schneider07/2019
573531083^7220+7220^31083119935Hans Havermann01/2021
5736(68*10^119931-11)/3119933Robert Price01/2020
57378*10^119930-3119931Ray Chandler04/2011
5738(2^398398+774)/2119930Stefano Morozzi09/2020
5739(10^119880+179)/9119880Serge Batalov12/2014
5740(9*2^398145+1)/73119853Lelio R Paula04/2014
5741(10^119836+77)/3119836Robert Price01/2018
574226681^27074-27074^26681119835Frank Doornink03/2024
574328179^17870+17870^28179119821Hans Havermann02/2021
57442^398029+1872527119819Enzo Doria05/2016
574533142^4119+4119^33142119802Hans Havermann01/2021
57462^397897-113541119779Enzo Doria08/2014
574728636^15171+15171^28636119728Hans Havermann02/2021
574887^61730-61730^87119727Norman Luhn09/2024
5749(10556^29929-1)/(10556^173-1)119724Ryan Propper11/2023
5750(2^397696+1042)/2119719Stefano Morozzi09/2020


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: February, 10 2025 11:16 (Time in France)

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