56 688 433 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 2⁷⁵

TF target 2⁷³

P-1

B1 =	670000
B2 =	17587500

Status	Date	User	Residue	Shift
Verified	2013-10-25	curtisc	E780AA8C15048CCF	36582997
Verified	2020-11-26	Smok_bmv	E780AA8C15048CCF	29964941

History

Date	User	Type	Result
2020-11-26	Smok_bmv	C-LL	E780AA8C15048CCF
2020-03-30	Sid & Andy	NF	no factor from 2^74 to 2^75
2018-12-13	Sid & Andy	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^63
2015-12-27	-Anonymous-	NF	no factor from 2^72 to 2^73
2013-10-25	curtisc	C-LL	E780AA8C15048CCF
2011-11-13	TheJudger	NF	no factor from 2^71 to 2^72
2011-11-11	Xyzzy	NF	no factor from 2^70 to 2^71
2011-11-06	Xyzzy	NF	no factor from 2^69 to 2^70
2011-10-28	James Heinrich	NF-PM1	B1=670000, B2=17587500
2011-07-21	GrunwalderGIMP	NF	no factor from 2^68 to 2^69
2009-05-25	David L	NF	no factor from 2^67 to 2^68
2008-08-06	Sturle Sunde	NF	no factor from 2^66 to 2^67
2008-08-05	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-08-05	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-08-04	Sturle Sunde	NF	no factor from 2^63 to 2^64