Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4763653Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
P-1
B1 = 6500000
B2 = 8445069360
ECM
DigitsB1Curves
255000096 / 280
Estimated T-Level: 21.7 ⓘ
LL
StatusDateUserResidueShift
Verified1998-06-14PaySys International947C665C6A23614A0
Verified2000-03-01Stacey Greenstein947C665C6A23614A2873577
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-09-19fre_gamesfactor ECM small0.00 % 2025-09-21
History
DateUserTypeResult
2024-11-16TheJudgerNF
no factor from 2^72 to 2^73
2024-11-16TheJudgerNF
no factor from 2^71 to 2^72
2023-02-11Sid & AndyNF-PM1
B1=6500000, B2=8445069360
2021-08-22SRBaseNF
no factor from 2^70 to 2^71
2021-08-18SRBaseNF
no factor from 2^69 to 2^70
2021-05-03TJAOINF
no factor from 2^68 to 2^69
2018-09-25YxinityNF
no factor from 2^67 to 2^68
2017-12-11YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-14snme2pm1NF
no factor from 2^65 to 2^66
2015-01-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-09VictordeHollanderNF
no factor from 2^63 to 2^64
2013-09-27Squeeky_SquirrelNF-PM1
B1=310000, B2=9687500, E=12
2011-11-05GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-29markrNF
no factor from 2^61 to 2^62
2009-08-24Carsten KossendeyNF-PM1
B1=30000, B2=412500