Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
14016257Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
8437232511198231549.6old
ECM
DigitsB1Curves
255000013 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-12-10riccardo ubertiE2BA83C18C9BC67211356882053
History
DateUserTypeResult
2024-05-11cramsey87NF
no factor from 2^68 to 2^69
2022-12-16riccardo ubertiNF-PM1
B1=1500000, B2=101498670
2022-12-12curtiscCERT
PRP Certification
Proof certified good
2022-12-10riccardo ubertiC-PRP
M14016257/843723251119823 : E2BA83C18C9BC672
PRP proof power = 8
PRP: Verified
Proof certified good
2022-10-27nordiNF-PM1
B1=300000, B2=211434300
2022-10-08nordiNF-PM1
B1=300000