56 778 367 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 =	570000
B2 =	12397500

Status	Date	User	Residue	Shift
Verified	2013-08-16	p2d2	B8018D3CB24C0783	55588866
Verified	2020-12-29	Dmitriy Degtiarev	B8018D3CB24C0783	38082379

History

Date	User	Type	Result
2020-12-29	Dmitriy Degtiarev	C-LL	B8018D3CB24C0783
2019-01-02	Sid & Andy	NF	no factor from 2^74 to 2^75
2018-10-17	Sid & Andy	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^63
2016-01-22	-Anonymous-	NF	no factor from 2^72 to 2^73
2013-08-16	p2d2	C-LL	B8018D3CB24C0783
2012-08-20	Jerry Hallett	NF-PM1	B1=570000, B2=12397500, E=12
2012-02-11	ANONYMOUS	NF	no factor from 2^71 to 2^72
2012-02-11	ANONYMOUS	NF	no factor from 2^70 to 2^71
2011-10-05	Paul H	NF	no factor from 2^69 to 2^70
2011-04-21	-Anonymous-	NF	no factor from 2^68 to 2^69
2009-07-26	Calculo	NF	no factor from 2^67 to 2^68
2008-08-14	Sturle Sunde	NF	no factor from 2^66 to 2^67
2008-08-12	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-08-10	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-08-10	Sturle Sunde	NF	no factor from 2^63 to 2^64