Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1603057Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 25000000
B2 = 321179794650
ECM
DigitsB1Curves
2550000280 / 280
30250000119 / 640
Estimated T-Level: 25.9 ⓘ
LL
StatusDateUserResidueShift
VerifiedValerie Menissier-MorainB23EFCB4115114520
Verified1998-11-07Jiri HradeckyB23EFCB411511452484729
Verified2015-07-20MadPooB23EFCB411511452854039
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-02Kriesel6575E4E8F780D805013
History
DateUserTypeResult
2025-09-03ANONYMOUSCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
6575E4E8F780D805
PRP proof power = 6
PRP: Verified
Proof certified good
2022-10-02Naegi MakotoNF-PM1
B1=25000000, B2=321179794650
2019-07-17TJAOINF
no factor from 2^67 to 2^68
2017-12-11TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-07-20MadPooC-LL
B23EFCB411511452
2015-02-07VictordeHollanderNF-PM1
B1=10000000, B2=200000000, E=12
2015-01-30VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-30VictordeHollanderNF
no factor from 2^63 to 2^64
2011-12-09markrNF-PM1
B1=275000, B2=6000000, E=12
2010-07-04GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-03Architects CubedNF
no factor from 2^60 to 2^61