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
11197Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
268729618.0old
339546561671135.02008-08-26 19:58:34
1822504421643306669960861112787.22008-10-16 23:57:25
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000004322 / 9201
Estimated T-Level: 42.3
TF below 2^136 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse1B2436B70AC9DD9C3013
Verified2017-10-02kkmrkkblmbrbk1B2436B70AC9DD9C3013
Verified2017-12-07ATH1B2436B70AC9DD9C3969013
Verified2020-04-17Oliver Kruse5DFA5297221B0B613269553
Verified2024-07-01kkmrkkblmbrbk5DFA5297221B0B61363653
P-1 factors
DateFactorB1B2
2022-12-29182250442164330666996086111100000000000122192573512709696
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11197/182250442164330666996086111/268729/33954656167 : 5DFA5297221B0B61
PRP: Verified
PRP without proof (small exponent)
2022-12-29-Anonymous-F-PM1
Factor: 182250442164330666996086111 / (P-1, B1=100000000000, B2=122192573512709700)
2020-04-17Oliver KruseC-PRP
M11197/268729/33954656167/182250442164330666996086111 : 5DFA5297221B0B61
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M11197/268729/33954656167/182250442164330666996086111 : 1B2436B70AC9DD9C
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M11197/268729/33954656167/182250442164330666996086111 : 1B2436B70AC9DD9C
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11197/268729/33954656167/182250442164330666996086111 : 1B2436B70AC9DD9C
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-10-16-Anonymous-F-ECM
Factor: 182250442164330666996086111
2008-08-26-Anonymous-F
Factor: 33954656167