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

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MnStatusDetails
2307157Factored
FactorDigitsBitsDate
7064305082477386243989772479.22020-03-16 23:48:02
ECM
DigitsB1Curves
255000043 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Barton MeeksBF5D218AD71650240
Verified (Factored)1999-11-24Joe ThomasBF5D218AD71650241280808
Verified (Factored)2018-05-02kkmrkkblmbrbkBF5D218AD7165024260662
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-03-17Niels_Mache_Nextcloud78E97413753F33B11201231953
Verified2020-03-17ATH78E97413753F33B11108070553
History
DateUserTypeResult
2020-03-17ATHC-PRP
M2307157/706430508247738624398977 : 78E97413753F33B1
PRP: Verified
PRP without proof (not generated)
2020-03-17Niels_Mache_NextcloudC-PRP
M2307157/706430508247738624398977 : 78E97413753F33B1
PRP: Verified
PRP without proof (not generated)
2020-03-16mnd9F-ECM
Factor: 706430508247738624398977 / (ECM curve 1, B1=50000, B2=5000000, Sigma=4965927526848252)
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-05-02kkmrkkblmbrbkC-LL
BF5D218AD7165024
2017-12-23Sid & AndyNF-PM1
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 2^1 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
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61