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
2442677Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^75 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 8900000
B2 = 45963188040
ECM
DigitsB1Curves
2550000232 / 280
Estimated T-Level: 24.1 ⓘ
LL
StatusDateUserResidueShift
VerifiedRichard Gray1F2A72A04CA2B18A0
VerifiedMarc Honey1F2A72A04CA2B18A0
Verified1999-11-17Chris Crawford1F2A72A04CA2B18A1955432
History
DateUserTypeResult
2024-05-21TJAOINF
no factor from 2^69 to 2^70
2023-08-31Sid & AndyNF-PM1
B1=8900000, B2=45963188040
2023-07-18JossNF-PM1
B1=1000000, B2=3645762120
2023-03-16JossNF-PM1
B1=1000000, B2=1580899320
2023-03-05JossNF-PM1
B1=1000000, B2=548467920
2021-07-05TJAOINF
no factor from 2^68 to 2^69
2019-04-22TJAOINF
no factor from 2^67 to 2^68
2019-03-13Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-07-12Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-01-20mikrNF-PM1
B1=1172000, B2=48000000, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-06Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-18Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-17JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61