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

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MnStatusDetails
14303Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
28607514.8old
715151619.42008-08-26 19:58:42
304008565803611444.82008-08-26 19:58:42
1619080987618162574712167.12008-08-29 02:24:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001265 / 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 KruseA16CE186AE986C594013
Verified2017-10-02kkmrkkblmbrbkA16CE186AE986C594013
Verified2017-12-07ATHA16CE186AE986C594198713
Verified2020-04-17Oliver KruseA9235B89F08EBA314946153
Verified (Factored)2022-05-12Jorge CoveiroA9235B89F08EBA311217153
Verified2024-07-01kkmrkkblmbrbkA9235B89F08EBA3141205653
P-1 factors
DateFactorB1B2
2024-01-29161908098761816257471100000000000122154521813133808
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14303/161908098761816257471/28607/30400856580361/715151 : A9235B89F08EBA31
PRP: Verified
PRP without proof (small exponent)
2024-01-29-Anonymous-F-PM1
Factor: 161908098761816257471 / (P-1, B1=100000000000, B2=122154521813133810)
2023-05-24JacobZNF-PM1
B1=7600000000, B2=30020805351537000
2022-05-12Jorge CoveiroC-PRP
M14303/28607 : A9235B89F08EBA31
PRP: Verified
PRP without proof (small exponent)
2022-01-24Ethan O'ConnorNF-PM1
B1=1000000000, B2=3088390743498060
2020-04-17Oliver KruseC-PRP
M14303/28607/715151/30400856580361/161908098761816257471 : A9235B89F08EBA31
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M14303/28607/715151/30400856580361/161908098761816257471 : A16CE186AE986C59
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M14303/28607/715151/30400856580361/161908098761816257471 : A16CE186AE986C59
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14303/28607/715151/30400856580361/161908098761816257471 : A16CE186AE986C59
PRP without proof (not generated)
2008-08-29-Anonymous-F-ECM
Factor: 161908098761816257471
2008-08-26-Anonymous-F-PM1
Factor: 30400856580361
2008-08-26-Anonymous-F
Factor: 715151