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
188779Factored
FactorDigitsBitsDate
57388817825.8old
44214177471851434458127640017238540508520742138.32017-07-19 03:16:29
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000168 / 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 Kruse55BCFF029815721E2013
Verified2017-09-22Oliver Kruse55BCFF029815721E2013
Verified2017-11-06kkmrkkblmbrbk55BCFF029815721E213414313
Verified2020-04-17Oliver KruseA10C9C3495E0DC5D210979053
Verified2023-08-24USAFSSA10C9C3495E0DC5D24379553
P-1 factors
DateFactorB1B2
2017-07-194421417747185143445812764001723854050852071000000002000000000
History
DateUserTypeResult
2023-08-24curtiscCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M188779/57388817/442141774718514344581276400172385405085207 : A10C9C3495E0DC5D
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M188779/57388817/442141774718514344581276400172385405085207 : A10C9C3495E0DC5D
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M188779/57388817/442141774718514344581276400172385405085207 : 55BCFF029815721E
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M188779/57388817/442141774718514344581276400172385405085207 : 55BCFF029815721E
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M188779/57388817/442141774718514344581276400172385405085207 : 55BCFF029815721E
PRP without proof (not generated)
2017-07-19kkmrkkblmbrbkF-PM1
Factor: 442141774718514344581276400172385405085207 / (P-1, B1=100000000, B2=2000000000, E=12)