56 511 199 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 2⁷³

P-1

B1 =	600000
B2 =	13800000

Status	Date	User	Residue	Shift
Verified	2013-02-24	inarcoa	5AC5A79BE2235E43	13752568
Verified	2021-01-15	Smok_bmv	5AC5A79BE2235E43	23850616

History

Date	User	Type	Result
2021-01-15	Smok_bmv	C-LL	5AC5A79BE2235E43
2018-10-17	linament	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^63 to 2^64
2016-01-22	-Anonymous-	NF	no factor from 2^72 to 2^73
2013-02-24	inarcoa	C-LL	5AC5A79BE2235E43
2012-09-04	kdgehman	NF	no factor from 2^71 to 2^72
2012-03-07	Torchwood Institute	NF-PM1	B1=600000, B2=13800000, E=6
2011-11-30	shauge	NF	no factor from 2^70 to 2^71
2011-06-26	Xyzzy	NF	no factor from 2^69 to 2^70
2011-04-14	Paul Leyland	NF	no factor from 2^68 to 2^69
2011-04-14	-Anonymous-	NF	no factor from 2^68 to 2^69
2009-11-21	Romanyuk	NF	no factor from 2^67 to 2^68
2008-03-05	James Heinrich	NF	no factor from 2^66 to 2^67
2008-03-04	James Heinrich	NF	no factor from 2^65 to 2^66
2008-03-04	Sturle Sunde	NF	no factor from 2^64 to 2^65