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
16484329Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
184950824167549810378469101912993.92020-03-24 23:09:16
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)2002-12-31Ian McLaughlin6DAD07EAC4C7FD0B5156731
Verified (Factored)2006-05-12Santi Ricciardi6DAD07EAC4C7FD0B2210380
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-03-30Perig15ACB3536078FB8411566545553
P-1 factors
DateFactorB1B2
2020-03-24184950824167549810378469101913250000
History
DateUserTypeResult
2024-03-30David BarinaCERT
PRP Certification
Proof certified good
2024-03-30PerigC-PRP
M16484329/18495082416754981037846910191 : 15ACB3536078FB84
PRP proof power = 8
PRP: Verified
Proof certified good
2024-02-12nordiNF-PM1
B1=500000, B2=266674590
2024-01-09nordiNF-PM1
B1=500000
2020-03-24James HeinrichF-PM1
Factor: 18495082416754981037846910191 / (P-1, B1=325000)
2018-02-18ramgeisNF
no factor from 2^68 to 2^69
2018-02-18ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-08-28NesowaNF
no factor from 2^66 to 2^67