PRP Records

Probable Primes Top 10000

(202632 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) !!!


Submit your PRPs


See the Top discoverers
See the Latest PRPs
Search by form



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 (> 30000) Who ? When ?
475218^66711-9183741Lelio R Paula11/2015
47514*10^83740-8983741Robert Price08/2017
4753(3*2^278172-1)/1183738Lelio R Paula02/2014
4754(15*29^57251+2561)/2883724Curtis Bright05/2015
47554*7^99059-983716Lelio R Paula10/2014
4756(2^278128-3)/12684472414983714Lelio R Paula12/2012
47572^278077+186721183710Enzo Doria03/2016
47582^278059-2783705Lelio R Paula06/2012
4759214^35917+35917^21483702Norbert Schneider12/2014
4760(23*10^83693+7)/383694Robert Price10/2015
476185^43375-283689Lelio R Paula09/2013
47625*3^175360+483669Lelio R Paula07/2014
4763(23^61441-1)/2283665Robert Price01/2012
476420091^14596+14596^2009183664Hans Havermann03/2017
47652^277907-11062983659Enzo Doria05/2014
476619522^19283+19283^1952283656Hans Havermann04/2017
47678*5^119664-383643Lelio R Paula10/2014
47688*3^175299-783640Lelio R Paula07/2014
4769(26*10^83638-413)/983639Robert Price10/2017
47703^175250+2283616Robert Price12/2013
477211^80285+3083609Lelio R Paula10/2015
477126870^1293+1293^2687083609Hans Havermann03/2017
47732^277691+187442383594Enzo Doria06/2016
477413^75022-6083571Lelio R Paula11/2015
477514^72905-5183559Lelio R Paula11/2015
4776(17*2^277565-1)/54383554Lelio R Paula02/2014
47775^119532-1283550Lelio R Paula10/2015
47786^107358-1625383541Enzo Doria02/2013
47792^277478-46021183530Enzo Doria06/2015
4780(22*10^83525-7)/383526Erik Branger09/2014
4781(30^56543+1)/3183520Robert Price07/2013
47822^277417-46078383511Paul Bourdelais04/2013
4783(22699*2^277387+1)/21983504Lelio R Paula06/2014
4784(31*2^277383-1)/24783500Lelio R Paula02/2014
478521368^8085+8085^2136883500Hans Havermann04/2017
4786(9*2^277342+1)/1383489Lelio R Paula12/2012
47875^119439-6683485Lelio R Paula10/2015
4788(14*10^83471-101)/383472Robert Price04/2017
47895*6^107263+783468Lelio R Paula10/2014
4790(64*10^83461-1)/983462Serge Batalov11/2010
479117^67796-9283420Lelio R Paula11/2015
47922^277106-11005783418Enzo Doria04/2014
47936^107200-1983418Lelio R Paula12/2015
479411^80096-183083412Enzo Doria12/2012
47953^174801+5683402Lelio R Paula12/2015
47962^277033-11197383396Enzo Doria05/2014
479720519^11572+11572^2051983378Hans Havermann03/2017
479820850^9971+9971^2085083374Hans Havermann03/2017
47996^107122-1886383358Enzo Doria03/2013
48004*10^83354-8983355Robert Price08/2017
48013^174697-3483352Robert Price11/2013
4802(9787*2^276855-1)/234583343Lelio R Paula04/2015
48032^276825+7522783333Enzo Doria04/2016
48045^119214+8483328Lelio R Paula10/2015
48052^276803-15983327Lelio R Paula06/2012
4806(3*2^276753-1)/2583311Lelio R Paula02/2014
4807114^40495+40495^11483295Norbert Schneider12/2014
480839967!2+102483282Robert Price02/2015
48102^276641+5783278Lelio R Paula06/2012
480935^53934-341483278Enzo Doria03/2013
4811(2^276655+78557)/36542583276Lelio R Paula12/2012
48122^276615-403583270Lelio R Paula08/2013
48132^276588+115583262Lelio R Paula08/2013
48152^276587-93783261Yves Minet10/2009
48142^276584-11318383261Enzo Doria07/2014
4816(2^276592-1017)/1384373983256Lelio R Paula12/2012
48172^276547-10959183249Enzo Doria04/2014
481813^74733-3283249Lelio R Paula11/2015
48192^276523-258783242Yves Minet07/2014
482018^66311-4383239Lelio R Paula11/2015
482111^79919-153083228Enzo Doria12/2012
48222^276468-10974583226Enzo Doria04/2014
48232^276462+538583224Lelio R Paula08/2013
4824(9787*2^276422-1)/383215Lelio R Paula04/2015
48262^276391-1583202Lelio R Paula06/2012
4825(4*10^83201+173)/383202Robert Price01/2017
48272^276316-10965583180Enzo Doria04/2014
48282^276305-11206383177Enzo Doria06/2014
4829(10^(2*41585+1)+54*10^41585-1)/983171Robert Price04/2017
483074913!4-283161Robert Price07/2017
48312^276227-183720783153Enzo Doria05/2015
4832(2^276227+3)/783152Lelio R Paula12/2012
48332^276184-6338983140Paul Bourdelais02/2012
48342^276066-11160383105Enzo Doria05/2014
4835(2^276028-3)*6-783094Gilbert Mozzo09/2016
4836(2^275897+9)/115383051Lelio R Paula12/2012
48372^275879-10980783048Enzo Doria04/2014
4839F(397379)83047Henri Lifchitz08/2003
4838U(397379)83047Serge Batalov03/2015
48413^174040-1483039Robert Price08/2013
4840(86*10^83038-221)/983039Robert Price06/2017
48422^275841-688383037Lelio R Paula07/2011
48433^174002-14083021Lelio R Paula12/2015
48446^106681+7783014Lelio R Paula12/2015
4845187^36539-283011Lelio R Paula10/2017
484611^79701-315083001Enzo Doria12/2012
4847(55459*2^275657+1)/2182985Lelio R Paula06/2014
4848(7*10^82960-457)/982960Robert Price09/2017
48492^275535-685582945Lelio R Paula08/2013
48513^173828-1482938Robert Price08/2013
48502^275512-10967782938Enzo Doria04/2014
48522^275446-11004582918Enzo Doria04/2014
4853(2^275473+47)/2952609744782916Lelio R Paula12/2012
48543^173755-1482903Robert Price08/2013
4855(182*10^82898+43)/982900Robert Price11/2017
48562^275363-11230982893Enzo Doria06/2014
485761^46427-6082888Norbert Schneider10/2014
48583*10^82880-7^8288082881Mike Oakes02/2010
48602^275290+9019582871Lelio R Paula07/2013
4859(35*10^82870-71)/982871Robert Price05/2015
48612^275270-185962182865Enzo Doria03/2016
48622^275259+8182862Henri Lifchitz01/2007
48637^98003+98003^7+182823Robert Price05/2014
486410^82790+12604382791Patrick De Geest07/2013
486510^82790-4782790Robert Price05/2011
48662^274985-11266382779Enzo Doria06/2014
48672^274935+1501582764Lelio R Paula07/2013
4868(17*2^274922+1)/382761Lelio R Paula12/2012
4869(43*10^82752-61)/982753Robert Price06/2015
4870(3*2^274862+1)/102782740Lelio R Paula12/2012
4871(31*2^274848-1)/406582736Lelio R Paula02/2014
4872(4^137405+23)/382726Robert Price02/2017
48732^274791-11049182721Enzo Doria05/2014
4874(11*2^274776-1)/9582715Lelio R Paula02/2014
4875(47*10^82706-119)/982707Robert Price09/2017
48762^274704-11139582695Enzo Doria05/2014
48772^274686-391182689Yves Minet04/2017
4878(2^274663-1017)/4887131829227982669Lelio R Paula12/2012
4879(3^173263-5)/1449882664Lelio R Paula12/2012
48802^274511-6487582637Lelio R Paula08/2013
488112^76572-8382636Lelio R Paula11/2015
48823^173191-2^17319182634Mike Oakes02/2004
488314^72072-1582604Lelio R Paula11/2015
4884(55459*2^274339+1)/382589Lelio R Paula06/2014
48852^274351+12382588Lelio R Paula06/2012
4886(1017*2^274339-1)/351582584Lelio R Paula04/2015
48876^106086+11382551Lelio R Paula12/2015
4888(17*10^82540-377)/982541Robert Price11/2017
48892^274093-5869582511Lelio R Paula07/2013
48907*10^82509-4782510Robert Price02/2017
48912^274081-655582507Lelio R Paula07/2013
48932^274074-274074+182505Robert Price10/2014
489414^71985+4782505Lelio R Paula11/2015
48925*10^82504+2182505Robert Price01/2017
48956^106014-13982495Lelio R Paula12/2015
4896(2^274046+47)/75382494Lelio R Paula12/2012
48972^274008-183809982485Enzo Doria05/2015
48982^273981-11002982477Enzo Doria04/2014
489919^64490-3082467Lelio R Paula12/2015
49002^273785+1171582418Lelio R Paula07/2013
49018*10^82417+5182418Robert Price05/2017
490211^79133-1082409Theodore Burton11/2005
490391^42063+9082404Norbert Schneider01/2016
49052^273662-6382381Lelio R Paula06/2012
49042^273661+25582381Lelio R Paula07/2013
4906(62*10^82377-17)/982378Robert Price09/2015
49078*10^82360-5182361Robert Price10/2017
4908(79*10^82347-1)/382349Robert Price11/2017
4909(11*10^82323+91)/382323Robert Price02/2017
4910(189977#+19081)/(19081*17260483)82317Makoto Morimoto10/2017
4911(189977#+196924)/(2*7*13*541*28874441)82316Makoto Morimoto10/2017
491215^69984+3282308Lelio R Paula11/2015
49139*6^105746+782288Lelio R Paula10/2014
491489^42211-8882286Norbert Schneider01/2016
4915gcd(V(1476435),5*F(295287)*(F(295287)+1)+1)82281Serge Batalov04/2015
4916(19*10^82270-43)/382271Robert Price10/2017
49172^273282-11024182267Enzo Doria05/2014
4918(13^73849+4^73849)/1782263Robert Price05/2013
492010^82254+9^(82254+1)82255Robert Price08/2016
491910^82254+45777382255Patrick De Geest12/2016
492110^82254-9960982254Patrick De Geest12/2016
4922(754*10^82250-7)/982252Robert Price11/2017
492318^65524+1382251Lelio R Paula11/2015
49242^273206-10782244Lelio R Paula06/2012
49252^273193-45914582240Enzo Doria05/2015
49272^273126+3693782220Yves Minet06/2010
492639505!2+12882220Robert Price03/2015
49282^273053-11211182198Enzo Doria06/2014
49292^273016+118582187Lelio R Paula07/2013
4930(2^273008+3)/782183Lelio R Paula12/2012
49315^117554-1538682167Enzo Doria02/2013
4932(38*10^82161+403)/982162Robert Price11/2017
49332^272907-11143982154Enzo Doria05/2014
4934(67607*2^272901+1)/5079011582149Lelio R Paula06/2014
49352^272875-6982144Lelio R Paula06/2012
49367^97197+482141Robert Price01/2014
4937(4*6^105554+1)/582137Serge Batalov10/2014
49386^105531-10982120Lelio R Paula12/2015
49392^272766-6582111Lelio R Paula06/2012
494019^64205-7882103Lelio R Paula12/2015
49412^272702+186997982092Enzo Doria05/2016
4942(29*2^272687-1)/982088Lelio R Paula02/2014
4943(5*10^82085-119)/382086Robert Price04/2016
49442^272660-11004982079Enzo Doria04/2014
49456^105474+6782075Lelio R Paula12/2015
49462^272637+8287582072Lelio R Paula07/2013
49472^272587-3182057Lelio R Paula06/2012
4948(41*10^82044-59)/982045Robert Price10/2017
49498*5^117368+982038Lelio R Paula10/2014
4950(101525^16384+1)/13107482023Lelio R Paula11/2011
49514*5^117343-782020Lelio R Paula10/2014
4952(265*10^81990+17)/381992Robert Price05/2016
49533^171843+1081990Robert Price10/2013
4954(7*10^81985+107)/381986Robert Price02/2017
4955(3*2^272356+1)/17716381983Lelio R Paula12/2012
49562^272296-11114981970Enzo Doria05/2014
4957(9*2^272243-1)/781954Lelio R Paula02/2014
49582^272177-11122381934Enzo Doria05/2014
4959(151009^15817+1)/15101081912Faysal YAtim06/2017
4960(16*10^81896-19)/381897Robert Price03/2016
4961(2^271922+78557)/6381855Lelio R Paula12/2012
4962(10^81848+77)/381848Robert Price01/2017
4963(24737*2^271883+1)/375781846Lelio R Paula06/2014
496410^81778+3981779Robert Price03/2011
496510^81778-17199981778Patrick De Geest07/2013
4966(14*10^81767-11)/381768Erik Branger09/2014
49672^271541+186841781742Enzo Doria04/2016
4968(2^271549-1)/23874968248781734Jens K. Andersen02/2009
49692^271484-16781725Lelio R Paula06/2012
4970(8*10^81709-611)/981709Robert Price11/2017
49712^271382+1290981695Lelio R Paula07/2013
497249^48334+4881694Norbert Schneider07/2014
49737^96668+4881694Lelio R Paula10/2015
497411^78435-141081682Enzo Doria12/2012
49755*10^81653+981654Dmitry Domanov11/2010
4976(2^271211-1)/61396149515981631Jens K. Andersen02/2009
49773^171068+5281621Lelio R Paula12/2015
49782^271115-11040781614Enzo Doria05/2014
49792^271111-11063581613Enzo Doria05/2014
49802^271098-11181609Lelio R Paula06/2012
4981(77*10^81606+13)/981607Robert Price10/2015
49822^271064-279020981599Enzo Doria03/2016
4983(13*2^271053-1)/309581593Lelio R Paula02/2014
49842^271040-5781592Lelio R Paula06/2012
4985(14*10^81585+73)/381586Robert Price04/2016
4986127^38779+12681584Norbert Schneider02/2015
498718^64966-4381551Lelio R Paula11/2015
4988(2^270840+47)/59181529Lelio R Paula12/2012
498920^62654+8781515Lelio R Paula01/2016
4990(19*10^81488+191)/381489Robert Price01/2017
49918*10^81487+2181488Robert Price02/2017
4992(73*10^81485+107)/981486Robert Price08/2016
4993536^29847+29847^53681458Norbert Schneider03/2017
49948*7^96378+981450Lelio R Paula10/2014
49952^270546-11034581443Enzo Doria05/2014
499613^73105-6081435Lelio R Paula11/2015
499744^49524+4381391Norbert Schneider06/2014
4998(3*2^270368-1)/1381389Lelio R Paula02/2014
4999(10^81363+719)/981363Serge Batalov12/2014
5000(10^81353+449)/981353Serge Batalov12/2014


Find by discoverer :


Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: February, 20 2018 10:36 (Time in France)

Go back
Valid XHTML 1.0!    Valid CSS!