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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
188653Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1131919720.1old
12073793823.52008-07-27 10:49:56
168655783927.32008-07-27 10:49:56
110967058357563007700412373.22016-10-07 19:54:07
2187588746651300810112690972787.52019-09-16 14:07:28
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000160 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseAF4D96E14BA9A85E4013
Verified (Factored)2017-09-22Oliver KruseAF4D96E14BA9A85E4013
Verified (Factored)2017-11-06kkmrkkblmbrbkAF4D96E14BA9A85E414371813
Verified2019-09-17Chang Chia-Tche56F3246E1028E2C1510825253
Verified2019-09-18marssystems56F3246E1028E2C1516492953
Verified2023-08-24USAFSS56F3246E1028E2C1511076053
P-1 factors
DateFactorB1B2
2016-10-0711096705835756300770041500000040000000
History
DateUserTypeResult
2023-08-24LOBESCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041/218758874665130081011269097 : 56F3246E1028E2C1
PRP proof power = 5
PRP: Verified
Proof certified good
2019-09-18marssystemsC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041/218758874665130081011269097 : 56F3246E1028E2C1
PRP: Verified
PRP without proof (small exponent)
2019-09-17Chang Chia-TcheC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041/218758874665130081011269097 : 56F3246E1028E2C1
PRP: Verified
PRP without proof (small exponent)
2019-09-16TJAOIF-ECM
Factor: 218758874665130081011269097 / (ECM curve 19, B1=250000, B2=25000000)
2017-11-06kkmrkkblmbrbkC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041 : AF4D96E14BA9A85E
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041 : AF4D96E14BA9A85E
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M188653/1131919/12073793/168655783/11096705835756300770041 : AF4D96E14BA9A85E
PRP without proof (not generated)
2017-07-21kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2016-10-07kkmrkkblmbrbkF-PM1
Factor: 11096705835756300770041 / (P-1, B1=5000000, B2=40000000, E=12)
2008-07-27J FeitsmaF
Factor: 168655783
2008-07-27J FeitsmaF
Factor: 12073793