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

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Exponent Range:










MnStatusDetails
16817239Factored
FactorDigitsBitsDate
1091265772417028968045582082169820340938123.02020-07-06 20:11:48
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-02-09Dan RichardsonE46F0EF8AE41FD737258960
Verified (Factored)2006-04-14Ars Technica Team Prime RibE46F0EF8AE41FD7313397612
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-21M MillerE1A040F0B9093E401437321253
Verified2020-09-17JaytholomewE1A040F0B9093E40165067653
P-1 factors
DateFactorB1B2
2020-07-0610912657724170289680455820821698203409150000030000000
History
DateUserTypeResult
2020-09-17GlennMaitzCERT
PRP Certification
Proof certified good
2020-09-17JaytholomewC-PRP
M16817239/10912657724170289680455820821698203409 : E1A040F0B9093E40
PRP proof power = 8
PRP: Verified
Proof certified good
2020-07-21M MillerC-PRP
M16817239/10912657724170289680455820821698203409 : E1A040F0B9093E40
PRP: Verified
PRP without proof (not generated)
2020-07-06ThaF-PM1
Factor: 10912657724170289680455820821698203409 / (P-1, B1=1500000, B2=30000000, E=12)
2020-05-25lycornNF
no factor from 2^69 to 2^70
2018-02-13ramgeisNF
no factor from 2^68 to 2^69
2018-02-13ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-09-15NesowaNF
no factor from 2^66 to 2^67