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:





MnDetails
1337269
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 260
Factored
FactorDigitsBitsDate
632902672331135.9old
8814189005233191549.62014-05-07 12:48:22
32921489514516116811961.52016-05-04 11:09:43
1712423986555932821772167.22015-01-15 12:44:12
24087784766377929189101692581.02021-07-16 08:45:12
P-1 factors
DateFactorsB1B2
2015-01-15171242398655593282177
50000015000000
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusProofDateUserResidueShiftTypeBase
Factored
Certified Good
Power=6
2025-09-01Kriesel061FBCC52AE9242C013
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-05Oliver KruseCEAFD7CF870053D14013
Factored
PRP without proof (not generated)
2017-10-24kkmrkkblmbrbkCEAFD7CF870053D1466053613
Verified
Certified Good
2021-07-16/r/counting061FBCC52AE9242C551705953
History
DateUserTypeResult
2025-09-03Wolfy339CERT
Proof certified good
2025-09-01KrieselC-PRP061FBCC52AE9242C
Proof Certified Good

Proof Power: 6

2021-07-16Massimo Cappelli (ik5pwa)CERT
Proof certified good
2021-07-16/r/countingC-PRPM1337269/63290267233/881418900523319/3292148951451611681/171242398655593282177/2408778476637792918910169 : 061FBCC52AE9242C
Proof Certified Good

Proof Power: 6

2021-07-16TJAOIF-ECMFactor: 2408778476637792918910169
2017-10-24kkmrkkblmbrbkC-PRPM1337269/63290267233/881418900523319/171242398655593282177/3292148951451611681 : CEAFD7CF870053D1
2017-10-05Oliver KruseC-PRPM1337269/63290267233/881418900523319/171242398655593282177/3292148951451611681 : CEAFD7CF870053D1
2017-09-30Oliver KruseC-PRPM1337269/63290267233/881418900523319/171242398655593282177/3292148951451611681 : CEAFD7CF870053D1
2016-05-04TJAOIFFactor: 3292148951451611681
2015-01-15alpertronF-PM1Factor: 171242398655593282177 / B1=500000, B2=15000000
2014-05-07TJAOIFFactor: 881418900523319