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
2456939Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8900000
B2 = 45963188040
ECM
DigitsB1Curves
2550000280 / 280
3025000091 / 640
Estimated T-Level: 25.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedSimon Burge9973766968DD484C0
Verified1998-03-23Chuck Hines9973766968DD484C0
Verified2015-11-15MadPoo9973766968DD484C794940
History
DateUserTypeResult
2024-03-15TJAOINF
no factor from 2^69 to 2^70
2023-09-03Sid & AndyNF-PM1
B1=8900000, B2=45963188040
2023-07-19JossNF-PM1
B1=1000000, B2=3645762120
2023-03-17JossNF-PM1
B1=1000000, B2=1580899320
2023-03-09JossNF-PM1
B1=1000000, B2=548467920
2021-07-16ATHNF-PP1
Start=2/7, B1=2500000, B2=182500000
2021-06-18Dylan DelgadoNF-PM1
B1=2860000, B2=294580000
2021-06-03TJAOINF
no factor from 2^68 to 2^69
2019-07-17TJAOINF
no factor from 2^67 to 2^68
2017-07-14Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-15MadPooC-LL
9973766968DD484C
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-05-23mikrNF-PM1
B1=2382500, B2=85770100, E=12
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-07Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-19Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61