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

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MnStatusDetails
2307677Factored
FactorDigitsBitsDate
30592419586640310619155249827618273043400142137.82017-12-06 02:44:39
ECM
DigitsB1Curves
2550000100 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Philipp HänggiFA585D154C8E26400
Verified (Factored)1999-03-15David WeisFA585D154C8E26401931456
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-12-06kkmrkkblmbrbkE8141CBD78BD2E831161357253
Verified2017-12-07Oliver KruseE8141CBD78BD2E83163985153
P-1 factors
DateFactorB1B2
2017-12-063059241958664031061915524982761827304340016000000180000000
History
DateUserTypeResult
2018-02-20alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-12-07Oliver KruseC-PRP
M2307677/305924195866403106191552498276182730434001 : E8141CBD78BD2E83
PRP: Verified
PRP without proof (not generated)
2017-12-06kkmrkkblmbrbkC-PRP
M2307677/305924195866403106191552498276182730434001 : E8141CBD78BD2E83
PRP: Verified
PRP without proof (not generated)
2017-12-06Sid & AndyF-PM1
Factor: 305924195866403106191552498276182730434001 / (P-1, B1=6000000, B2=180000000, E=12)
2017-05-30Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-22ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-06Jerry HallettNF
no factor from 2^62 to 2^63
2012-05-13Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-15BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61