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

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MnStatusDetails
365461Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
9946072928312120199351372479.72011-07-28 09:04:45
ECM
DigitsB1Curves
2550000280 / 280
30250000374 / 640
Estimated T-Level: 27.9
TF below 2^88 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David SlowinskiFC80
Verified (Factored)Mike Gach4BA42F84A6144FC80
Verified (Factored)Klaus Kastens4BA42F84A6144FC80
Verified (Factored)Eivind Triel4BA42F84A6144FC8216857
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver Kruse76CF0785B9AEF0961013
Verified2017-11-02kkmrkkblmbrbk76CF0785B9AEF096125223613
Verified2020-04-18Oliver Kruse2B60D9D8F84B7D74125458853
Verified2024-09-24kkmrkkblmbrbk2B60D9D8F84B7D74128986153
History
DateUserTypeResult
2024-09-24CatalystCERT
PRP Certification
Proof certified good
2024-09-24kkmrkkblmbrbkC-PRP
M365461/994607292831212019935137 : 2B60D9D8F84B7D74
PRP proof power = 5
PRP: Verified
Proof certified good
2024-05-28yuriy_5-1NF-PM1
B1=2000004, B2=213229066050
2024-02-16Denial140NF-PM1
B1=1000000, B2=8403510570
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-18Oliver KruseC-PRP
M365461/994607292831212019935137 : 2B60D9D8F84B7D74
PRP: Verified
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M365461/994607292831212019935137 : 76CF0785B9AEF096
PRP: Verified
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M365461/994607292831212019935137 : 76CF0785B9AEF096
PRP: Verified
PRP without proof (not generated)
2011-07-28Anton RepkoF-ECM
Factor: 994607292831212019935137
2009-01-23Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-29Sturle SundeNF
no factor from 2^58 to 2^59