Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
434303Factored
FactorDigitsBitsDate
130565111235046936770824572683.42019-05-15 19:33:39
ECM
DigitsB1Curves
2550000280 / 280
30250000296 / 640
Estimated T-Level: 27.3 ⓘ
TF below 2^86 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David SlowinskiE390
Verified (Factored)Ferdy Keler0E44B42373848E390
Verified (Factored)Eivind Triel0E44B42373848E3950008
Verified (Factored)2002-03-10Dennis Pope0E44B42373848E3964750
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-05-15ATHBF7BDBB18AEDF68C127908053
Verified2019-05-16kkmrkkblmbrbkBF7BDBB18AEDF68C121129953
History
DateUserTypeResult
2019-05-16kkmrkkblmbrbkC-PRP
M434303/13056511123504693677082457 : BF7BDBB18AEDF68C
PRP: Verified
PRP without proof (small exponent)
2019-05-15ATHC-PRP
M434303/13056511123504693677082457 : BF7BDBB18AEDF68C
PRP: Verified
PRP without proof (small exponent)
2019-05-15alexF-ECM
Factor: 13056511123504693677082457 / (ECM curve 183, B1=250000, B2=25000000, Sigma=4441466847727521)
2018-12-12Gordon SpenceNF
no factor from 2^65 to 2^66
2017-12-21Gordon SpenceNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-29Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-29Gordon SpenceNF
no factor from 2^62 to 2^63
2012-12-01dbaughNF
no factor from 2^61 to 2^62
2012-11-27dbaughNF
no factor from 2^60 to 2^61
2012-08-29markrNF-PM1
B1=10000000, B2=400000000, E=12
2010-08-18Rob_DeeNF-PM1
B1=1000000, B2=2000000, E=6
2010-08-18Rob_DeeNF-PM1
B1=500000, B2=1000000
2009-08-26Carsten KossendeyNF-PM1
B1=434303