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
4691107Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 4200000
B2 = 10880984400
ECM
DigitsB1Curves
2550000280 / 280
3025000060 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-06-01Jim MulveyE78BBDC3B27FC0DC0
Verified2000-02-09Jan Harm MoesE78BBDC3B27FC0DC2024199
History
DateUserTypeResult
2023-03-07Sid & AndyNF-PM1
B1=4200000, B2=10880984400
2021-11-03Aaron HavilandNF-PM1
B1=480000, B2=14400000, e=12
2021-03-23-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-16-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-16-Anonymous-NF
no factor from 2^69 to 2^70
2021-03-16-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-09YxinityNF
no factor from 2^67 to 2^68
2018-05-09BloodERazorNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-10snme2pm1NF
no factor from 2^65 to 2^66
2015-02-21monstNF
no factor from 2^64 to 2^65
2015-02-21JayderNF
no factor from 2^63 to 2^64
2013-08-12Squeeky_SquirrelNF-PM1
B1=145000, B2=2972500, E=6
2011-12-11GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-07-05markrNF
no factor from 2^61 to 2^62
2009-08-20Carsten KossendeyNF-PM1
B1=25000, B2=381250