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
3617Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
83844881271033.0old
152496153496496471753.8old
1965124401740087816624812477.4old
360988284655671427267355257399662185700140131.42017-02-07 10:38:15
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000014758 / 40830
Estimated T-Level: 51.8
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseACBA826EEB7AA3194013
Verified2017-10-02kkmrkkblmbrbkACBA826EEB7AA3194013
Verified2017-12-07ATHACBA826EEB7AA3194276113
Verified2020-04-17Oliver KruseD40AE82A2DCD6D614302953
Verified2024-02-03Wentao HuangD40AE82A2DCD6D614209353
P-1 factors
DateFactorB1B2
2017-02-073609882846556714272673552573996621857001100000000000109863493910757904
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M3617/8384488127/15249615349649647/196512440174008781662481/3609882846556714272673552573996621857001 : D40AE82A2DCD6D61
PRP: Verified
PRP without proof (small exponent)
2022-07-02mikrNF-PM1
B1=100000000000, B2=262205522487458550
2020-04-17Oliver KruseC-PRP
M3617/8384488127/15249615349649647/196512440174008781662481/3609882846556714272673552573996621857001 : D40AE82A2DCD6D61
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M3617/8384488127/15249615349649647/196512440174008781662481/3609882846556714272673552573996621857001 : ACBA826EEB7AA319
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M3617/8384488127/15249615349649647/196512440174008781662481/3609882846556714272673552573996621857001 : ACBA826EEB7AA319
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3617/known_factors : ACBA826EEB7AA319
PRP without proof (not generated)
2017-02-07kkmrkkblmbrbkF-PM1
Factor: 3609882846556714272673552573996621857001 / (P-1, B1=100000000000, B2=109863493910757900)