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
1941013Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 268
TF target 262
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 50000000
B2 = 256188332400
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8
LL
StatusDateUserResidueShift
VerifiedBruce Appleby6CCD9B456AFBC9BA0
Verified1999-01-02Jim Simpson6CCD9B456AFBC9BA293765
Verified2015-07-12MadPoo6CCD9B456AFBC9BA121724
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-02KrieselAD7205752211415D013
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
AD7205752211415D
PRP proof power = 6
PRP: Verified
Proof certified good
2023-04-12RichD0NF-PM1
B1=50000000, B2=256188332400
2022-08-16masserNF-PP1
Start=2/7, B1=1500000, B2=54000000
2022-08-06Wentao HuangNF-PM1
B1=2330000, B2=10302160050
2019-05-11chuenkitNF
no factor from 2^67 to 2^68
2018-09-11JossNF-PM1
B1=1941013, B2=194101300, E=12
2018-02-28JossNF-PM1
B1=1941013, B2=113248640, E=12
2018-02-11JossNF-PM1
B1=1941013, B2=56624320, E=12
2018-02-04JossNF-PM1
B1=1941013, B2=28312160, E=12
2017-11-24TJAOINF
no factor from 2^66 to 2^67
2017-04-12JossNF-PM1
B1=1415608, B2=14156080, E=12
2017-01-22JossNF-PM1
B1=1179674
2017-01-04JossNF-PM1
B1=983062
2016-12-24JossNF-PM1
B1=819219
2016-12-17JossNF-PM1
B1=682683
2016-12-15JossNF-PM1
B1=568903
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-08Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-05ramgeisNF
no factor from 2^65 to 2^66
2015-07-12MadPooC-LL
6CCD9B456AFBC9BA
2015-05-05lycornNF
no factor from 2^64 to 2^65
2015-05-05lycornNF
no factor from 2^63 to 2^64
2011-12-11markrNF-PM1
B1=275000, B2=6000000, E=12
2011-08-27GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-01-28S485122NF
no factor from 2^60 to 2^61