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

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MnStatusDetails
296479Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
26223573479591341.3old
641717934080778711755.82014-08-28 10:11:16
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000189 / 1566
Estimated T-Level: 30.6
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 Kruse395DA6F7D10C9FE32013
Verified2017-10-12Oliver Kruse395DA6F7D10C9FE327562113
Verified2017-11-06kkmrkkblmbrbk395DA6F7D10C9FE32616713
Verified2020-04-17Oliver KruseE1160AB741009CDC21529253
Verified2024-08-19kkmrkkblmbrbkE1160AB741009CDC215695853
History
DateUserTypeResult
2024-12-02yuriy_5-1NF-PM1
B1=27276068, B2=6679632809850
2024-08-19Luke DurantCERT
PRP Certification
Proof certified good
2024-08-19kkmrkkblmbrbkC-PRP
M296479/2622357347959/64171793408077871 : E1160AB741009CDC
PRP proof power = 5
PRP: Verified
Proof certified good
2023-08-30Kevin_9611NF-PM1
B1=5000000, B2=50799048300
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-04-28nordiNF-PP1
Start=6/5, B1=10000000, B2=500000000
2021-04-22nordiNF-PP1
Start=2/7, B1=10000000, B2=500000000
2020-04-17Oliver KruseC-PRP
M296479/2622357347959/64171793408077871 : E1160AB741009CDC
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M296479/2622357347959/64171793408077871 : 395DA6F7D10C9FE3
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M296479/2622357347959/64171793408077871 : 395DA6F7D10C9FE3
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M296479/2622357347959/64171793408077871 : 395DA6F7D10C9FE3
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M296479/2622357347959/64171793408077871 : 395DA6F7D10C9FE3
PRP without proof (not generated)
2014-08-28TJAOIF-ECM
Factor: 64171793408077871