Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
13553Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
910219481929.8old
1831204378971237.42008-08-26 19:58:40
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001332 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseC54D66ED75A9A3032013
Verified2017-10-12kkmrkkblmbrbkC54D66ED75A9A30321284813
Verified2020-04-17Oliver KruseAAF39C3DD40938A22191153
Verified2024-07-01kkmrkkblmbrbkAAF39C3DD40938A22568553
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13553/183120437897/910219481 : AAF39C3DD40938A2
PRP: Verified
PRP without proof (small exponent)
2024-01-29-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-19JacobZNF-PM1
B1=8100000000, B2=31521845619113850
2023-01-29Lisander ViaeneNF-PM1
B1=10000000, B2=7131516351960
2023-01-29Lisander ViaeneNF-PM1
B1=65000, B2=7131516351960
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M13553/910219481/183120437897 : AAF39C3DD40938A2
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M13553/910219481/183120437897 : C54D66ED75A9A303
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13553/910219481/183120437897 : C54D66ED75A9A303
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13553/910219481/183120437897 : C54D66ED75A9A303
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 183120437897