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
205000001Composite: proven not-prime with PRP test
TF
No factors below 279
TF target 279
P-1
B1 = 2145000
B2 = 66495000
PRP
StatusDateUserResidueShiftTypeBase
Verified2020-09-30Albrecht Heeffer13130C5B0012E039013
History
DateUserTypeResult
2023-03-06Mark RoseNF
no factor from 2^78 to 2^79
2023-03-06Mark RoseNF
no factor from 2^77 to 2^78
2023-03-06Mark RoseNF
no factor from 2^76 to 2^77
2023-03-06Mark RoseNF
no factor from 2^75 to 2^76
2021-02-04Joerg DittmarNF-PM1
B1=1000000
2020-09-30Roland ClarksonCERT
PRP Certification
CERT proof power = 8
Proof certified good
2020-09-30Albrecht HeefferC-PRP
13130C5B0012E039
PRP proof power = 8
PRP: Verified
Proof certified good
2020-05-31S00030NF
no factor from 2^74 to 2^75
2013-11-18Oliver KruseNF-PM1
B1=2145000, B2=66495000, E=6
2010-04-24rudimeierNF
no factor from 2^73 to 2^74
2010-01-11rudimeierNF
no factor from 2^72 to 2^73
2009-10-07rudimeierNF
no factor from 2^71 to 2^72
2009-08-14rudimeierNF
no factor from 2^70 to 2^71
2009-07-11rudimeierNF
no factor from 2^69 to 2^70
2009-06-29rudimeierNF
no factor from 2^68 to 2^69
2009-06-20rudimeierNF
no factor from 2^67 to 2^68