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
203627Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^108 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 330000000
B2 = 4224722622120
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001253 / 1566
Estimated T-Level: 34.0 ⓘ
LL
StatusDateUserResidueShift
VerifiedBurton A. LelandFD137EBBEE091AE30
VerifiedPhilippe ChessaFD137EBBEE091AE30
VerifiedEivind TrielFD137EBBEE091AE3114810
Verified2002-12-16Brian J. BeesleyFD137EBBEE091AE319673
History
DateUserTypeResult
2023-12-24tim sNF
no factor from 2^67 to 2^68
2023-02-20masserNF-PP1
Start=6/5, B1=30000000, B2=990000000
2023-02-11masserNF-PP1
Start=167/59, B1=30000000, B2=960000000
2023-02-09masserNF-PP1
Start=2/7, B1=30000000, B2=990000000
2022-05-22Sid & AndyNF-PM1
B1=330000000, B2=4224722622120
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-09-26Gordon SpenceNF
no factor from 2^66 to 2^67
2019-12-14Gordon SpenceNF
no factor from 2^65 to 2^66
2017-08-19ConductorNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2015-12-31Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-31Gordon SpenceNF
no factor from 2^62 to 2^63
2015-06-03snme2pm1NF
no factor from 2^61 to 2^62
2014-08-22mikrNF-PM1
B1=100835998, B2=5445143892, E=12
2013-08-03lycornNF
no factor from 2^60 to 2^61
2009-02-16axnNF-PM1
B1=5000000, B2=200000000, E=12
2009-01-28Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59