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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Exponent Range:










MnStatusDetails
1780787Factored
FactorDigitsBitsDate
64927099512888950391962.5old
48519059937574522303512272.02015-06-17 11:21:23
22085759661159636118012972580.92020-03-23 08:46:08
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)Robert Clark79004DA94BD8ED6E0
Verified (Factored)1998-12-06Louis Towles79004DA94BD8ED6E789905
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver KruseDEE48E1805ECF6222013
Verified (Factored)2017-11-10kkmrkkblmbrbkDEE48E1805ECF6222168742913
Verified2020-03-24Jinyuan Wang3CD1C1CDFDD328D7368395253
Verified2020-04-27qq10109032293CD1C1CDFDD328D7345348553
P-1 factors
DateFactorB1B2
2015-06-17485190599375745223035150000015000000
History
DateUserTypeResult
2020-04-27qq1010903229C-PRP
M1780787/6492709951288895039/4851905993757452230351/2208575966115963611801297 : 3CD1C1CDFDD328D7
PRP: Verified
PRP without proof (not generated)
2020-03-24Jinyuan WangC-PRP
M1780787/6492709951288895039/4851905993757452230351/2208575966115963611801297 : 3CD1C1CDFDD328D7
PRP: Verified
PRP without proof (not generated)
2020-03-23_p95holder_F-ECM
Factor: 2208575966115963611801297 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-10kkmrkkblmbrbkC-PRP
M1780787/6492709951288895039/4851905993757452230351 : DEE48E1805ECF622
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1780787/6492709951288895039/4851905993757452230351 : DEE48E1805ECF622
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1780787/6492709951288895039/4851905993757452230351 : DEE48E1805ECF622
PRP without proof (not generated)
2015-06-17alpertronF-PM1
Factor: 4851905993757452230351 / (P-1, B1=500000, B2=15000000, E=12)