20 204 221 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
150097371906196745379803959	27	87.0	2021-01-01 20:39:01

Status	Date	User	Residue	Shift
Verified (Factored)	2004-02-23	Sam Martin	E6B6318E805A8217	4880769
Verified (Factored)	2008-04-25	RMT	E6B6318E805A8217	16280777

P-1 factors

Date	Factor	B1	B2
2021-01-01	150097371906196745379803959	430000	13867500

History

Date	User	Type	Result
2021-01-01	Dylan Delgado	F-PM1	Factor: 150097371906196745379803959 / (P-1, B1=430000, B2=13867500, e=12, n=1152K CUDAPm1 v0.22)
2018-02-16	ramgeis	NF	no factor from 2^69 to 2^70
2017-11-05	VictordeHollander	NF	no factor from 2^68 to 2^69
2017-04-28	ramgeis	NF	no factor from 2^67 to 2^68
2015-02-11	NR	NF	no factor from 2^66 to 2^67