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
162451Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1275126634311236.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000163 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse32CC8F46F95C0C621013
Verified2017-09-22Oliver Kruse32CC8F46F95C0C621013
Verified2017-11-06kkmrkkblmbrbk32CC8F46F95C0C6215249213
Verified2020-04-17Oliver KruseE119AFFCBC7F9631112874653
Verified2024-02-03Wentao HuangE119AFFCBC7F963116757353
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M162451/127512663431 : E119AFFCBC7F9631
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M162451/127512663431 : E119AFFCBC7F9631
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M162451/127512663431 : 32CC8F46F95C0C62
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M162451/127512663431 : 32CC8F46F95C0C62
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M162451/127512663431 : 32CC8F46F95C0C62
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M162451/127512663431 : 32CC8F46F95C0C62
PRP without proof (not generated)
2017-04-23kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12