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
4190269Composite: 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 = 6200000
B2 = 33322740360
ECM
DigitsB1Curves
2550000280 / 280
3025000069 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
BadKen Kriesel3E2B2B1168D7A8410
Verified1999-10-15MechEngrGATechA5EF6FA2603586431877167
Verified2000-03-01Keith JobeA5EF6FA2603586431313595
History
DateUserTypeResult
2024-11-28Andrew BNF
no factor from 2^71 to 2^72
2022-12-12DRobinsonPENF-PM1
B1=6200000, B2=33322740360
2022-06-01mikrNF
no factor from 2^70 to 2^71
2021-06-15axnNF
no factor from 2^69 to 2^70
2021-06-07TJAOINF
no factor from 2^68 to 2^69
2021-04-04Dylan DelgadoNF-PM1
B1=400000, B2=12000000, e=12
2018-12-07YxinityNF
no factor from 2^67 to 2^68
2017-12-23YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-06snme2pm1NF
no factor from 2^65 to 2^66
2013-11-16David CampeauNF
no factor from 2^64 to 2^65
2013-10-26JayderNF
no factor from 2^63 to 2^64
2013-08-24Squeeky_SquirrelNF-PM1
B1=125000, B2=2406250, E=6
2011-08-25USAFSSNF-PM1
B1=45000, B2=630000, E=6
2011-07-01GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-12-16Grant McCrackenNF
no factor from 2^61 to 2^62
2009-08-03Carsten KossendeyNF-PM1
B1=25000, B2=337500