61 721 827 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁴

TF target 2⁷⁴

P-1

B1 =	585000
B2 =	12138750

Status	Date	User	Residue	Shift
Verified	2014-08-08	MLJ	89246CDA38F58303	30501962
Verified	2022-05-27	Andrew_and	89246CDA38F58303	21607775

History

Date	User	Type	Result
2022-05-27	Andrew_and	C-LL	89246CDA38F58303
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2014-08-08	MLJ	C-LL	89246CDA38F58303
2014-08-02	monst	NF	no factor from 2^73 to 2^74
2013-05-05	TheJudger	NF-PM1	B1=585000, B2=12138750, E=12
2013-02-01	Chuck	NF	no factor from 2^72 to 2^73
2013-02-01	Chuck	NF	no factor from 2^71 to 2^72
2012-04-28	Xyzzy	NF	no factor from 2^70 to 2^71
2012-04-28	Xyzzy	NF	no factor from 2^69 to 2^70
2009-07-21	David L	NF	no factor from 2^68 to 2^69
2009-02-09	tmorrow	NF	no factor from 2^67 to 2^68
2009-02-08	Lilloki	NF	no factor from 2^66 to 2^67
2009-02-07	Lilloki	NF	no factor from 2^65 to 2^66
2009-02-07	Lilloki	NF	no factor from 2^64 to 2^65
2009-02-05	Ethan O'Connor	NF	no factor from 2^63 to 2^64