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
27303847Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
119133120495351508366520569355318628099140129.82021-10-10 18:48:13
LL
StatusDateUserResidueShift
Verified (Factored)2007-03-20Antonio Rebordao3F807ED625DA318425075597
Verified (Factored)2011-11-16Cong_yao_Zhou3F807ED625DA318411846508
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-02-01Dobri0D16B61B1062CAA1132884753
P-1 factors
DateFactorB1B2
2021-10-1011913312049535150836652056935531862809911200000120000000
History
DateUserTypeResult
2023-02-01Ben DeloCERT
PRP Certification
Proof certified good
2023-02-01DobriC-PRP
M27303847/1191331204953515083665205693553186280991 : 0D16B61B1062CAA1
PRP proof power = 9
PRP: Verified
Proof certified good
2021-10-10Oliver KruseF-PM1
Factor: 1191331204953515083665205693553186280991 / (P-1, B1=1200000, B2=120000000, E=24)
2021-10-04Oliver KruseNF-PM1
B1=1200000, B2=61200000, E=24
2021-09-12TheJudgerNF
no factor from 2^73 to 2^74
2021-08-23TheJudgerNF
no factor from 2^72 to 2^73
2021-08-23TheJudgerNF
no factor from 2^71 to 2^72
2021-02-28mikrNF
no factor from 2^70 to 2^71
2018-09-24ramgeisNF
no factor from 2^69 to 2^70
2018-04-09VictordeHollanderNF
no factor from 2^68 to 2^69
2011-11-16Cong_yao_ZhouC-LL
3F807ED625DA3184
2011-10-23Carsten KossendeyNF
no factor from 2^67 to 2^68