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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
9001Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1512169720.5old
19147446377691340.8old
66595250869634082577709832582.5old
2685308536047185763740952095836064458756583944144.32023-01-26 01:48:39
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006784 / 16550
Estimated T-Level: 47.0
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse386FE0677299EAD43013
Verified (Factored)2017-10-02kkmrkkblmbrbk386FE0677299EAD43013
Verified (Factored)2017-12-07ATH386FE0677299EAD43824713
Verified (Factored)2020-04-17Oliver KruseF38616AC2FEF761E3346653
Verified2023-01-26Denial140F38616AC2FEF761E4615453
History
DateUserTypeResult
2023-07-24JacobZNF-PM1
B1=65000000000, B2=251099672798124150
2023-01-26Denial140C-PRP
M9001/1512169/1914744637769/6659525086963408257770983/26853085360471857637409520958360644587565839 : F38616AC2FEF761E
PRP: Verified
PRP without proof (small exponent)
2023-01-26Denial140F-ECM
Factor: 26853085360471857637409520958360644587565839 / (ECM curve 52, B1=11000000, B2=99324315090, Sigma=3946644149112759)
2023-01-22Denial140NF-PM1
B1=1000000000, B2=248202816391530
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M9001/1512169/1914744637769/6659525086963408257770983 : F38616AC2FEF761E
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M9001/1512169/1914744637769/6659525086963408257770983 : 386FE0677299EAD4
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M9001/1512169/1914744637769/6659525086963408257770983 : 386FE0677299EAD4
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9001/known_factors : 386FE0677299EAD4
PRP without proof (not generated)