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:





MnDetails
87000929
Composite: proven not-prime with PRP test
No factors below 277
TF target 275
P-1
B1 = 1100000
B2 = 287971530
ECM
DigitsB1Curves
255000091 / 280
Estimated T-Level: 21.6 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP
StatusProofDateUserResidueShiftTypeBase
Verified
PRP without proof (not generated)
2018-12-27Mihai PredaE7EA7DBFDB0C4F31043
Verified
PRP without proof (not generated)
2019-11-30ATH935122CC899A9BAD013
Verified
PRP without proof (not generated)
2020-06-28Kriesel935122CC899A9BAD5054345213
Verified
Certified Good
Power=9
2026-01-31Jason LynchE7EA7DBFDB0C4F318027526843
History
DateUserTypeResult
2026-02-01TheGazManCERT
Proof certified good
2026-01-31Jason LynchC-PRPE7EA7DBFDB0C4F31
Proof Certified Good

Proof Power: 9

2024-01-10KrieselNF-PP1Start=133/17, B1=1100000, B2=200000000
2024-01-05KrieselNF-PP1Start=6/5, B1=1100000, B2=200000000
2023-12-02KrieselNF-PP1Start=2/7, B1=1100000, B2=200000000
2023-11-27KrieselNF-PM1B1=1100000, B2=287971530
2020-09-03mikrNFno factor TF: 76-77
2020-06-28KrieselC-PRP935122CC899A9BAD
2020-06-22KrieselNF-PM1B1=320000, B2=5360000
2019-11-30ATHC-PRP935122CC899A9BAD
2018-12-27Mihai PredaC-PRPE7EA7DBFDB0C4F31
2017-04-14Mark RoseNFno factor TF: 73-74
2017-04-14Mark RoseNFno factor TF: 74-75
2017-04-14Mark RoseNFno factor TF: 75-76
2017-04-14Mark RoseNFno factor TF: 72-73
2017-04-14Mark RoseNFno factor TF: 71-72
2014-08-05timbitNF-PM1B1=990000, B2=29700000, E=6
2013-06-24frmarNFno factor TF: 70-71
2013-03-24Chang Chia-TcheNFno factor TF: 69-70
2013-03-22gregorNFno factor TF: 68-69
2013-03-17theunionNFno factor TF: 67-68
2013-03-08Freaks32NFno factor TF: 66-67
2012-03-14SpecOpUsNFno factor TF: 65-66
2010-11-14Architects CubedNFno factor TF: 64-65