Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
253741Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1522447720.5old
58583722091032.42008-07-21 09:15:03
129272732019671443.62008-07-21 09:15:03
6776236770951283906332169.22014-08-22 10:16:12
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000237 / 1566
Estimated T-Level: 30.8
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse68B397860F8C9C7F4013
Verified2017-10-12Oliver Kruse68B397860F8C9C7F45738713
Verified2017-11-06kkmrkkblmbrbk68B397860F8C9C7F4824613
Verified2020-04-17Oliver Kruse8CFE759F2B6D4044425132753
Verified2024-02-03Wentao Huang8CFE759F2B6D4044417915653
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M253741/1522447/12927273201967/5858372209/677623677095128390633 : 8CFE759F2B6D4044
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-23Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-28Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M253741/1522447/5858372209/12927273201967/677623677095128390633 : 8CFE759F2B6D4044
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M253741/1522447/5858372209/12927273201967/677623677095128390633 : 68B397860F8C9C7F
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M253741/1522447/12927273201967/5858372209/677623677095128390633 : 68B397860F8C9C7F
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M253741/known_factors : 68B397860F8C9C7F
PRP without proof (not generated)
2014-08-22TJAOIF-ECM
Factor: 677623677095128390633
2008-07-21J FeitsmaF
Factor: 5858372209
2008-07-21J FeitsmaF
Factor: 12927273201967