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

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MnStatusDetails
9862109Factored
FactorDigitsBitsDate
129150714300572348941528292872993.42022-01-04 07:31:15
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2000-05-31Kevin ArimaD639BFC6BA969CC37358839
Verified (Factored)2003-09-29Stephan GüntherD639BFC6BA969CC31015054
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-01-10Oliver Kruse723DF021815B0F171255246353
P-1 factors
DateFactorB1B2
2022-01-041291507143005723489415282928710000002117999730
History
DateUserTypeResult
2022-01-101997rj7CERT
PRP Certification
Proof certified good
2022-01-10Oliver KruseC-PRP
M9862109/12915071430057234894152829287 : 723DF021815B0F17
PRP proof power = 8
PRP: Verified
Proof certified good
2022-01-04LuminescenceF-PM1
Factor: 12915071430057234894152829287 / (P-1, B1=1000000, B2=2117999730)
2021-10-29SRBaseNF
no factor from 2^71 to 2^72
2021-09-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-21SRBaseNF
no factor from 2^69 to 2^70
2019-09-17chuenkitNF
no factor from 2^68 to 2^69
2016-12-06snme2pm1NF
no factor from 2^67 to 2^68
2016-12-06snme2pm1NF
no factor from 2^66 to 2^67
2015-04-30VictordeHollanderNF
no factor from 2^65 to 2^66
2013-08-24NesowaNF
no factor from 2^64 to 2^65
2013-03-31NesowaNF-PM1
B1=120000, B2=2370000, E=6