37 980 587 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
6128200033732417753471	22	72.4	2018-05-31 12:50:50

Status	Date	User	Residue	Shift
Verified (Factored)	2009-07-08	curtisc	186395EA9CC50337	29133698
Verified (Factored)	2015-02-24	Midknightz	186395EA9CC50337	14063222

P-1 factors

Date	Factor	B1	B2
2018-05-31	6128200033732417753471	725000	16312500

History

Date	User	Type	Result
2018-05-31	Architects Cubed	F-PM1	Factor: 6128200033732417753471 / (P-1, B1=725000, B2=16312500, E=12)
2018-05-26	Architects Cubed	NF	no factor from 2^71 to 2^72
2015-02-24	Midknightz	C-LL	186395EA9CC50337
2014-04-02	Jerry Hallett	NF	no factor from 2^70 to 2^71
2014-04-02	Jerry Hallett	NF	no factor from 2^69 to 2^70
2013-08-30	Carsten Kossendey	NF	no factor from 2^68 to 2^69
2009-07-08	curtisc	C-LL	186395EA9CC50337