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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
161627Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
458427628513991445.4old
5716719196921706231859.02008-08-26 20:12:38
28792551474781149291961.32014-05-30 18:28:17
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000183 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseE13E12A27983C5E93013
Verified2017-09-22Oliver KruseE13E12A27983C5E93013
Verified2017-11-06kkmrkkblmbrbkE13E12A27983C5E935819213
Verified2020-04-17Oliver KruseA4FFD3C7CF36FE5E32868053
Verified2024-02-03Wentao HuangA4FFD3C7CF36FE5E3642553
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M161627/45842762851399/571671919692170623/2879255147478114929 : A4FFD3C7CF36FE5E
PRP proof power = 5
PRP: Verified
Proof certified good
2021-07-07ATHNF-PP1
Start=2/7, B1=15000000, B2=1500000000
2020-04-17Oliver KruseC-PRP
M161627/45842762851399/571671919692170623/2879255147478114929 : A4FFD3C7CF36FE5E
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M161627/45842762851399/571671919692170623/2879255147478114929 : E13E12A27983C5E9
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M161627/45842762851399/571671919692170623/2879255147478114929 : E13E12A27983C5E9
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M161627/45842762851399/571671919692170623/2879255147478114929 : E13E12A27983C5E9
PRP without proof (not generated)
2017-04-16kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-05-30TJAOIF-ECM
Factor: 2879255147478114929
2008-08-26-Anonymous-F-ECM
Factor: 571671919692170623