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:










MnStatusDetails
3803Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
7607412.9old
38168201031031.8old
59057623671032.5old
146272518228711443.7old
312882976179611444.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000015669 / 40830
Estimated T-Level: 51.9
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 Kruse151F359DFF7C0FF75013
Verified2017-10-02kkmrkkblmbrbk151F359DFF7C0FF75013
Verified2017-12-07ATH151F359DFF7C0FF757013
Verified2020-04-17Oliver Kruse1A278248769FFC2B5266753
Verified (Factored)2022-05-12Jorge Coveiro1A278248769FFC2B126353
Verified2024-02-03Wentao Huang1A278248769FFC2B5150053
History
DateUserTypeResult
2024-04-01masserNF-PM1
B1=77000000000, B2=122424523715894400
2024-02-03Wentao HuangC-PRP
M3803/7607/3816820103/5905762367/14627251822871/31288297617961 : 1A278248769FFC2B
PRP: Verified
PRP without proof (small exponent)
2022-05-12Jorge CoveiroC-PRP
M3803/7607 : 1A278248769FFC2B
PRP: Verified
PRP without proof (small exponent)
2021-08-27Seth_TrNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M3803/7607/3816820103/5905762367/14627251822871/31288297617961 : 1A278248769FFC2B
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M3803/7607/3816820103/5905762367/14627251822871/31288297617961 : 151F359DFF7C0FF7
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M3803/7607/3816820103/5905762367/14627251822871/31288297617961 : 151F359DFF7C0FF7
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3803/known_factors : 151F359DFF7C0FF7
PRP without proof (not generated)