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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
21055501Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
10614347139950067524750027684912550647340142136.32023-06-24 14:00:57
LL
StatusDateUserResidueShift
Verified (Factored)2004-02-23ChristineDCC7BA0B3AE74A0A8098296
Verified (Factored)2008-10-05jim barchukDCC7BA0B3AE74A0A19470311
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-08-07Max Dettweiler14D45515C47EF93C1475832553
P-1 factors
DateFactorB1B2
2023-06-241061434713995006752475002768491255064734019370001146129600
History
DateUserTypeResult
2023-08-07krackerCERT
PRP Certification
Proof certified good
2023-08-07Max DettweilerC-PRP
M21055501/106143471399500675247500276849125506473401 : 14D45515C47EF93C
PRP proof power = 8
PRP: Verified
Proof certified good
2023-06-24James HeinrichF-PM1
Factor: 106143471399500675247500276849125506473401 / (P-1, B1=937000, B2=1146129600)
2021-12-23-Anonymous-NF
no factor from 2^73 to 2^74
2021-11-19-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2017-09-15ramgeisNF
no factor from 2^69 to 2^70
2017-09-15ramgeisNF
no factor from 2^68 to 2^69
2017-05-04ramgeisNF
no factor from 2^67 to 2^68
2015-04-09NRNF
no factor from 2^66 to 2^67