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

PrimeNet Exponent Status

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MnStatusDetails
331997Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4647959722.1old
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 Kruse060388968673BFF71013
Verified2017-10-13Oliver Kruse060388968673BFF7116363113
Verified2017-12-12ATH060388968673BFF7119670413
Verified2020-04-18Oliver Kruse4E3405B1FE2B973B111561453
Verified2024-09-07kkmrkkblmbrbk4E3405B1FE2B973B12569553
History
DateUserTypeResult
2024-10-14yuriy_5-1NF-PM1
B1=19000000, B2=2911512553950
2024-09-07Ben DeloCERT
PRP Certification
Proof certified good
2024-09-07kkmrkkblmbrbkC-PRP
M331997/4647959 : 4E3405B1FE2B973B
PRP proof power = 5
PRP: Verified
Proof certified good
2023-08-18USAFSSNF-PM1
B1=4000000, B2=19965800400
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M331997/4647959 : 4E3405B1FE2B973B
PRP: Verified
PRP without proof (small exponent)
2017-12-12ATHC-PRP
M331997/4647959 : 060388968673BFF7
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M331997/4647959 : 060388968673BFF7
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M331997/4647959 : 060388968673BFF7
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M331997/4647959 : 060388968673BFF7
PRP without proof (not generated)