102 520 021 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
15771311670301864112826017	26	83.7	2021-02-05 02:53:48

P-1 factors

Date	Factor	B1	B2
2021-02-05	15771311670301864112826017	10000000	10000000

History

Date	User	Type	Result
2021-02-05	Mihai Preda	F-PM1	Factor: 15771311670301864112826017 / (P-1, B1=10000000)
2020-11-08	TheJudger	NF	no factor from 2^75 to 2^76
2020-11-08	TheJudger	NF	no factor from 2^74 to 2^75
2020-03-31	SRBase	NF	no factor from 2^73 to 2^74
2020-03-29	SRBase	NF	no factor from 2^72 to 2^73
2015-01-09	shauge	NF	no factor from 2^71 to 2^72
2014-07-11	Ryan Propper	NF	no factor from 2^70 to 2^71
2014-07-11	SMoffat	NF	no factor from 2^69 to 2^70
2014-05-06	SMoffat	NF	no factor from 2^68 to 2^69
2014-05-03	SMoffat	NF	no factor from 2^67 to 2^68
2013-09-07	processinfo	NF	no factor from 2^66 to 2^67
2012-04-23	Torchwood Institute	NF	no factor from 2^65 to 2^66
2010-08-19	Architects Cubed	NF	no factor from 2^64 to 2^65
2010-04-26	1997rj7	NF	no factor from 2^63 to 2^64