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
1624813Factored
FactorDigitsBitsDate
400201589433308850080039311491239652137121.62018-02-24 23:22:01
ECM
DigitsB1Curves
2550000280 / 280
30250000130 / 640
Estimated T-Level: 26.0 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)CalkinsD5E89DA4D9DDCE600
Verified (Factored)1999-02-21Phillip TwissD5E89DA4D9DDCE601592039
Verified (Factored)2015-07-10MadPooD5E89DA4D9DDCE60564470
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-02-24ATHEF85D4548AC0A6701156535853
Verified2018-02-26Oliver KruseEF85D4548AC0A6701154557053
P-1 factors
DateFactorB1B2
2018-02-24400201589433308850080039311491239652110000000200000000
History
DateUserTypeResult
2018-02-26Oliver KruseC-PRP
M1624813/4002015894333088500800393114912396521 : EF85D4548AC0A670
PRP: Verified
PRP without proof (not generated)
2018-02-24ATHC-PRP
M1624813/4002015894333088500800393114912396521 : EF85D4548AC0A670
PRP: Verified
PRP without proof (not generated)
2018-02-24VictordeHollanderF-PM1
Factor: 4002015894333088500800393114912396521 / (P-1, B1=10000000, B2=200000000, E=12)
2018-02-18JossNF-PM1
B1=2000000, B2=80000000, E=12
2018-02-07JossNF-PM1
B1=2000000, B2=40000000, E=12
2017-11-17TJAOINF
no factor from 2^66 to 2^67
2017-08-22JossNF-PM1
B1=2000000, B2=20000000, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-07-10MadPooC-LL
D5E89DA4D9DDCE60
2015-04-30monstNF
no factor from 2^64 to 2^65
2015-04-29omylistNF
no factor from 2^63 to 2^64
2011-12-01BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2010-08-22GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-07Architects CubedNF
no factor from 2^60 to 2^61