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
15542729Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
329863442359765342464232374.82022-03-31 22:48:58
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-06-09J. Brian WatkinsEEEB58563EA6020815074289
Verified (Factored)2006-07-25Andreas JantosEEEB58563EA6020815093715
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-08-10PerigE1FAE50F568DF9FF11426023653
P-1 factors
DateFactorB1B2
2022-03-313298634423597653424642330000002941004430
2022-08-183298634423597653424642330000002941004430
History
DateUserTypeResult
2023-08-10junkman2usaCERT
PRP Certification
Proof certified good
2023-08-10PerigC-PRP
M15542729/32986344235976534246423 : E1FAE50F568DF9FF
PRP proof power = 8
PRP: Verified
Proof certified good
2022-08-18-Anonymous-F-PM1
Factor: 32986344235976534246423 / (P-1, B1=3000000, B2=2941004430)
2022-03-31Denial140F-PM1
Factor: 32986344235976534246423 / (P-1, B1=3000000, B2=2941004430)
2022-03-24Denial140NF
no factor from 2^73 to 2^74
2022-03-21RichD0NF
no factor from 2^73 to 2^74
2022-02-02Markus K.NF
no factor from 2^72 to 2^73
2021-09-16-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-07SRBaseNF
no factor from 2^70 to 2^71
2021-06-04lycornNF
no factor from 2^69 to 2^70
2018-03-23ramgeisNF
no factor from 2^68 to 2^69
2018-03-23ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2013-12-28NesowaNF
no factor from 2^66 to 2^67