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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
13335857Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
21129887158889940063865842312890.82023-05-02 20:12:53
8665282834368222921241589882068435135116.12023-05-02 20:12:53
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)2002-10-19Terry S. Arnold712873D9D76F216D3227498
Verified (Factored)2005-12-12Daniel Swanson712873D9D76F216D88045
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-03Naegi Makoto3F6435C1D00140FF2108531753
P-1 factors
DateFactorB1B2
2023-05-0218309644849006653690585715884246107535923735775476817272506908116000001657907160
History
DateUserTypeResult
2023-05-03GP97CERT
PRP Certification
Proof certified good
2023-05-03Naegi MakotoC-PRP
M13335857/2112988715888994006386584231/86652828343682229212415898820684351 : 3F6435C1D00140FF
PRP proof power = 8
PRP: Verified
Proof certified good
2023-05-02nordiF-PM1
Factors: 2112988715888994006386584231,86652828343682229212415898820684351 / (P-1, B1=1600000, B2=1657907160)
2023-02-08nordiNF-PM1
B1=1600000
2022-02-24-Anonymous-NF
no factor from 2^73 to 2^74
2022-02-20-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-22-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-03SRBaseNF
no factor from 2^70 to 2^71
2021-08-07SRBaseNF
no factor from 2^69 to 2^70
2018-01-14ramgeisNF
no factor from 2^68 to 2^69
2017-12-23-Anonymous-NF
no factor from 2^67 to 2^68
2015-07-24NesowaNF
no factor from 2^66 to 2^67
2013-09-06David CampeauNF
no factor from 2^65 to 2^66
2013-05-14lycornNF
no factor from 2^64 to 2^65