47 771 077 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
219162823085570708422724641	27	87.5	2019-02-01 17:49:24

Status	Date	User	Residue	Shift
Verified (Factored)	2010-08-06	Malloe	272D81CF1D64C21F	8944161

P-1 factors

Date	Factor	B1	B2
2019-02-01	219162823085570708422724641	1000000	20000000

History

Date	User	Type	Result
2019-02-01	Sid & Andy	F-PM1	Factor: 219162823085570708422724641 / (P-1, B1=1000000, B2=20000000, E=12)
2017-12-27	bayanne	NF	no factor from 2^72 to 2^73
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^63
2015-11-08	Judge Hale	NF	no factor from 2^71 to 2^72
2015-09-11	Sid & Andy	NF	no factor from 2^70 to 2^71
2015-08-04	Gordon Spence	NF	no factor from 2^69 to 2^70
2010-08-06	Malloe	C-LL	272D81CF1D64C21F
2010-05-31	Malloe	NF-PM1	B1=745000