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
2047651Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 262
TF below 2^82 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 15400000
B2 = 47011244280
ECM
DigitsB1Curves
2550000280 / 280
30250000161 / 640
Estimated T-Level: 26.3 ⓘ
LL
StatusDateUserResidueShift
VerifiedRichard Larson1D5320BF4CFC5A510
Verified1999-03-15Michael Collier1D5320BF4CFC5A511862396
Verified2016-07-15Mark Rose1D5320BF4CFC5A51775339
History
DateUserTypeResult
2024-05-05GregNF
no factor from 2^69 to 2^70
2023-08-26Sid & AndyNF-PM1
B1=15400000, B2=47011244280
2023-07-05JossNF-PM1
B1=1000000, B2=4437761790
2023-03-10JossNF-PM1
B1=1000000, B2=2049006960
2023-01-27JossNF-PM1
B1=1000000, B2=710870160
2023-01-24Architects CubedNF
no factor from 2^69 to 2^70
2021-08-16TJAOINF
no factor from 2^68 to 2^69
2019-08-05mikrNF-PM1
B1=4000000, B2=200000000, E=12
2019-07-01BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2019-03-23chuenkitNF
no factor from 2^67 to 2^68
2016-08-04Gordon SpenceNF
no factor from 2^66 to 2^67
2016-07-15Mark RoseC-LL
1D5320BF4CFC5A51
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-02ramgeisNF
no factor from 2^65 to 2^66
2015-10-06Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-04-13VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-13VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-22JossNF-PM1
B1=166345
2013-08-30ramgeisNF
no factor from 2^62 to 2^63
2012-02-28Sebastian HornbostelNF
no factor from 2^61 to 2^62
2012-01-05Squeeky_SquirrelNF-PM1
B1=135000, B2=2868750, E=6
2011-01-04JossNF-PM1
B1=50000
2010-12-28JossNF-PM1
B1=30000
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61