49 817 423 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
42712897009524892901387201	26	85.1	2019-09-17 22:15:51

Status	Date	User	Residue	Shift
Verified (Factored)	2011-03-22	forrest-lumpkin	07A4B957745245D9	29395503
Verified (Factored)	2019-03-07	Smok_bmv	07A4B957745245D9	3105862

P-1 factors

Date	Factor	B1	B2
2019-09-17	42712897009524892901387201	1000000	20000000

History

Date	User	Type	Result
2019-09-17	Sid & Andy	F-PM1	Factor: 42712897009524892901387201 / (P-1, B1=1000000, B2=20000000, E=12)
2019-07-02	-Anonymous-	NF	no factor from 2^73 to 2^74
2019-03-07	Smok_bmv	C-LL	07A4B957745245D9
2018-01-30	monst	NF	no factor from 2^72 to 2^73
2015-12-06	-Anonymous-	NF	no factor from 2^71 to 2^72
2015-06-14	LaurV	NF	no factor from 2^70 to 2^71
2015-06-12	LaurV	NF	no factor from 2^69 to 2^70
2011-03-22	forrest-lumpkin	C-LL	07A4B957745245D9
2010-12-26	forrest-lumpkin	NF-PM1	B1=780000