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
4904477Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
TF below 2^75 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 4000000
B2 = 10397372700
ECM
DigitsB1Curves
2550000224 / 280
Estimated T-Level: 24.0 ⓘ
LL
StatusDateUserResidueShift
VerifiedGeorge Woltman1A6AEC0D264A909A1840459
Bad1998-06-07Bruce Mitchell7EDF6D59E62DB9AB0
Verified2000-04-05Binary Digits1A6AEC0D264A909A467145
History
DateUserTypeResult
2023-04-04Sid & AndyNF-PM1
B1=4000000, B2=10397372700
2021-04-27-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-25-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-23-Anonymous-NF
no factor from 2^69 to 2^70
2021-03-29TJAOINF
no factor from 2^68 to 2^69
2018-05-23ramgeisNF
no factor from 2^67 to 2^68
2017-10-31YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-24snme2pm1NF
no factor from 2^65 to 2^66
2014-12-29VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-29VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-11mikrNF-PM1
B1=1200000, B2=39750000, E=12
2011-09-03GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-07-11Squeeky_SquirrelNF-PM1
B1=60000, B2=960000, E=6
2010-04-09markrNF
no factor from 2^61 to 2^62
2009-09-13Carsten KossendeyNF-PM1
B1=30000, B2=435000