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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
484643Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1213615860592011546.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000210 / 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 Kruse1301684A51D13BD91013
Verified2017-09-27Oliver Kruse1301684A51D13BD91013
Verified2017-11-09kkmrkkblmbrbk1301684A51D13BD913100213
Verified2020-04-18Oliver KruseEF370AEC9A4D8164114273053
Verified2024-11-26kkmrkkblmbrbkEF370AEC9A4D816413446153
History
DateUserTypeResult
2024-11-26David HruskaCERT
PRP Certification
Proof certified good
2024-11-26kkmrkkblmbrbkC-PRP
M484643/121361586059201 : EF370AEC9A4D8164
PRP proof power = 6
PRP: Verified
Proof certified good
2024-08-22cramsey87NF-PM1
B1=7000000, B2=42834594660
2020-04-18Oliver KruseC-PRP
M484643/121361586059201 : EF370AEC9A4D8164
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M484643/121361586059201 : 1301684A51D13BD9
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M484643/121361586059201 : 1301684A51D13BD9
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M484643/121361586059201 : 1301684A51D13BD9
PRP: Verified
PRP without proof (not generated)