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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
483883Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
55162663825.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver KruseF32BA0C7ADCD62E11013
Verified2017-09-27Oliver KruseF32BA0C7ADCD62E11013
Verified2017-11-09kkmrkkblmbrbkF32BA0C7ADCD62E1117345213
Verified2020-04-18Oliver KruseB568EB2A9E8BC87E127050653
Verified2024-11-26kkmrkkblmbrbkB568EB2A9E8BC87E144886853
History
DateUserTypeResult
2024-11-26XyzzyCERT
PRP Certification
Proof certified good
2024-11-26kkmrkkblmbrbkC-PRP
M483883/55162663 : B568EB2A9E8BC87E
PRP proof power = 6
PRP: Verified
Proof certified good
2024-08-22cramsey87NF-PM1
B1=7000000, B2=42834594660
2020-04-18Oliver KruseC-PRP
M483883/55162663 : B568EB2A9E8BC87E
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M483883/55162663 : F32BA0C7ADCD62E1
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M483883/55162663 : F32BA0C7ADCD62E1
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M483883/55162663 : F32BA0C7ADCD62E1
PRP: Verified
PRP without proof (not generated)