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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MnStatusDetails
2480897Factored
FactorDigitsBitsDate
408526680578864391755.2old
355793162367259460654172374.92018-03-02 14:41:03
1788561514905987742499692477.22018-10-07 02:33:21
ECM
DigitsB1Curves
255000060 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-14Oliver KruseB159A9E47E944089113035953
Verified (Factored)2017-11-29ATHB159A9E47E944089163784153
Verified (Factored)2018-03-07Oliver KruseB159A9E47E9440892210873953
Verified2018-10-07ATHB159A9E47E944089332060053
P-1 factors
DateFactorB1B2
2018-10-0717885615149059877424996920000000
History
DateUserTypeResult
2023-03-18Denial140NF-PM1
B1=1000000, B2=6543255810
2022-08-27USAFSSNF-PM1
B1=720000, B2=712857600
2018-10-07ATHC-PRP
M2480897/40852668057886439/35579316236725946065417/178856151490598774249969 : B159A9E47E944089
PRP: Verified
PRP without proof (not generated)
2018-10-07alpertronF-PM1
Factor: 178856151490598774249969 / (P-1, B1=2000000)
2018-03-07Oliver KruseC-PRP
M2480897/40852668057886439/35579316236725946065417 : B159A9E47E944089
PRP: Verified
PRP without proof (not generated)
2018-03-02Daniil TsarkovF-ECM
Factor: 35579316236725946065417 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-29ATHC-PRP
M2480897/40852668057886439 : B159A9E47E944089
PRP: Verified
PRP without proof (not generated)
2017-10-14Oliver KruseC-PRP
M2480897/40852668057886439 : B159A9E47E944089
PRP: Verified
PRP without proof (not generated)