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

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MnStatusDetails
2894677Factored
FactorDigitsBitsDate
4171483513230723027549592478.52016-09-15 19:15:33
ECM
DigitsB1Curves
255000015 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Bruce Loving60244C6F0EBA85E30
Verified (Factored)1999-08-22C. Cooper / S. Boone60244C6F0EBA85E32024563
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-24Oliver KruseE3CA7E48AA302D581243068353
Verified2017-12-08kkmrkkblmbrbkE3CA7E48AA302D581151185853
History
DateUserTypeResult
2023-04-16Kevin_9611NF-PM1
B1=240000, B2=279852300
2017-12-08kkmrkkblmbrbkC-PRP
M2894677/417148351323072302754959 : E3CA7E48AA302D58
PRP: Verified
PRP without proof (not generated)
2017-10-24Oliver KruseC-PRP
M2894677/417148351323072302754959 : E3CA7E48AA302D58
PRP: Verified
PRP without proof (not generated)
2016-09-15bamF-ECM
Factor: 417148351323072302754959 / (ECM curve 3, B1=50000, B2=5000000)
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-19ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2012-01-11markrNF
no factor from 2^61 to 2^62
2011-02-22Carsten KossendeyNF-PM1
B1=200000, B2=5000000, E=6
2010-12-24JossNF-PM1
B1=20000
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61