Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
5026589Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
320177882249468676263992374.82025-04-28 10:33:50
ECM
DigitsB1Curves
255000093 / 280
Estimated T-Level: 21.7 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-12-21Craig SmithF61F123D3002F1EC0
Verified (Factored)2000-03-22Andrew ChinaF61F123D3002F1EC3573312
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-05-04ViliamF791765593D7EF2A41432664853
History
DateUserTypeResult
2025-05-04dirkswansonCERT
PRP Certification
Proof certified good
2025-05-04ViliamFC-PRP
M5026589/32017788224946867626399 : 791765593D7EF2A4
PRP proof power = 7
PRP: Verified
Proof certified good
2025-04-28gunnerman1F-ECM
Factor: 32017788224946867626399 / (ECM curve 26, B1=54205, B2=38864985, Edwards Sigma=2596535278761874)
2022-05-23Sid & AndyNF-PM1
B1=4000000, B2=8989970220
2021-10-20ATHNF-PP1
Start=2/7, B1=2500000, B2=90000000
2021-04-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-04-04Dylan DelgadoNF-PM1
B1=560000, B2=31360000
2021-04-02-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-01-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-01-Anonymous-NF
no factor from 2^69 to 2^70
2021-02-01TJAOINF
no factor from 2^68 to 2^69
2018-06-07ramgeisNF
no factor from 2^67 to 2^68
2017-02-15Squeeky_SquirrelNF-PM1
B1=300000, B2=9375000, E=12
2016-05-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^63
2015-07-27snme2pm1NF
no factor from 2^65 to 2^66
2014-12-15VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-15VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-14JossNF-PM1
B1=67769
2009-07-19USAFSSNF-PM1
B1=55000, B2=907500, E=6