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

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MnStatusDetails
1332151Factored
FactorDigitsBitsDate
418862198741371036872065.22014-03-08 14:38:15
329093273265571564278712374.82018-08-31 10:13:55
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)George Woltman7B78E1171C13F7490
Verified (Factored)Cornelius Caesar7B78E1171C13F7490
Verified (Factored)Brian J. Beesley7B78E1171C13F7491191404
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30Oliver KruseE6B87F5B073605E61013
Verified (Factored)2017-10-23kkmrkkblmbrbkE6B87F5B073605E6115276613
Verified2018-08-31ATH827FAD9BEC4440272128635653
Verified2018-08-31Oliver Kruse827FAD9BEC444027288285753
History
DateUserTypeResult
2022-05-30Magallan3sF
Factor: 41886219874137103687 / TF: 65-66
2022-05-30Magallan3sNF
no factor from 2^64 to 2^65
2022-05-30Magallan3sNF
no factor from 2^63 to 2^64
2022-05-30Magallan3sNF
no factor from 2^62 to 2^63
2022-05-30Magallan3sNF
no factor from 2^61 to 2^62
2022-05-30Magallan3sNF
no factor from 2^1 to 2^61
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2018-08-31Oliver KruseC-PRP
M1332151/41886219874137103687/32909327326557156427871 : 827FAD9BEC444027
PRP: Verified
PRP without proof (not generated)
2018-08-31ATHC-PRP
M1332151/41886219874137103687/32909327326557156427871 : 827FAD9BEC444027
PRP: Verified
PRP without proof (not generated)
2018-08-31TJAOIF-ECM
Factor: 32909327326557156427871 / (ECM curve 85, B1=50000, B2=5000000)
2017-10-23kkmrkkblmbrbkC-PRP
M1332151/41886219874137103687 : E6B87F5B073605E6
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1332151/41886219874137103687 : E6B87F5B073605E6
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-03-08Never Odd Or EvenF
Factor: 41886219874137103687 / TF: 65-66
2014-02-04Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-02-04Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-02-04Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-02-04Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-02-04Never Odd Or EvenNF
no factor from 2^65 to 2^66
2013-10-22David CampeauNF
no factor from 2^64 to 2^65
2012-09-01lycornNF
no factor from 2^61 to 2^64
2009-02-25Sturle SundeNF
no factor from 2^60 to 2^61