Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1795921Factored
FactorDigitsBitsDate
40576800520177001357677372581.72015-07-01 11:29:03
174199700933161507985129696172993.82023-10-23 12:07:54
318280825428907748276912703806331101.32015-02-25 08:46:07
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 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)Mikael Lehikoinen849A5E2E1A9E357B0
Verified (Factored)1998-12-21Goede Schueler/Christoph Steinbeck849A5E2E1A9E357B458046
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse56380AF9B75376CA2013
Verified (Factored)2017-11-11kkmrkkblmbrbk56380AF9B75376CA235592813
Verified2023-10-23Naegi MakotoE7EF45E4BCFD5C4B330131453
P-1 factors
DateFactorB1B2
2015-07-01405768005201770013576773750000015000000
History
DateUserTypeResult
2023-10-23curtiscCERT
PRP Certification
Proof certified good
2023-10-23Naegi MakotoC-PRP
M1795921/4057680052017700135767737/17419970093316150798512969617/3182808254289077482769127038063 : E7EF45E4BCFD5C4B
PRP proof power = 7
PRP: Verified
Proof certified good
2023-10-23TJAOIF-ECM
Factor: 17419970093316150798512969617 / (ECM curve 21, B1=250000, B2=40000000, Sigma=6247750754808563)
2017-11-11kkmrkkblmbrbkC-PRP
M1795921/4057680052017700135767737/3182808254289077482769127038063 : 56380AF9B75376CA
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1795921/3182808254289077482769127038063/4057680052017700135767737 : 56380AF9B75376CA
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1795921/3182808254289077482769127038063/4057680052017700135767737 : 56380AF9B75376CA
PRP without proof (not generated)
2015-07-01alpertronF-PM1
Factor: 4057680052017700135767737 / (P-1, B1=500000, B2=15000000, E=12)
2015-02-25Chang Chia-TcheF-ECM
Factor: 3182808254289077482769127038063 / (ECM curve 3, B1=50000, B2=5000000)
2015-02-21JossNF-PM1
B1=396926
2015-02-15JossNF-PM1
B1=360842
2015-01-13JossNF-PM1
B1=271108
2014-10-10JossNF-PM1
B1=180739
2014-04-28-Anonymous-NF-PM1
B1=145000
2011-02-07Carsten KossendeyNF-PM1
B1=95000, B2=1638750, E=6
2010-11-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-19Architects CubedNF
no factor from 2^60 to 2^61