56 870 449 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 2⁷⁶

TF target 2⁷³

P-1

B1 =	565000
B2 =	11582500

Status	Date	User	Residue	Shift
Bad	2013-04-08	WernerP	149805A4E330545C	20159728
Verified	2013-05-18	Amazon EC2	9FECA9EF5BC6549D	46503611
Verified	2016-09-26	AirSquirrels	9FECA9EF5BC6549D	6709225

History

Date	User	Type	Result
2020-11-07	-Anonymous-	NF	no factor from 2^75 to 2^76
2020-10-24	-Anonymous-	NF	no factor from 2^74 to 2^75
2019-02-03	Sid & Andy	NF	no factor from 2^73 to 2^74
2016-09-26	AirSquirrels	C-LL	9FECA9EF5BC6549D
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^63
2015-07-27	Mark Rose	NF	no factor from 2^72 to 2^73
2013-05-18	Amazon EC2	C-LL	9FECA9EF5BC6549D
2013-04-08	WernerP	C-LL	149805A4E330545C
2012-10-24	1997rj7	NF-PM1	B1=565000, B2=11582500
2012-08-22	Bdot	NF	no factor from 2^71 to 2^72
2011-12-04	Tom Duell	NF	no factor from 2^70 to 2^71
2011-06-15	Geoff Wing	NF	no factor from 2^69 to 2^70
2011-04-18	BigBrother	NF	no factor from 2^68 to 2^69
2009-12-06	Florian	NF	no factor from 2^67 to 2^68
2008-08-24	Sturle Sunde	NF	no factor from 2^66 to 2^67
2008-08-24	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-08-23	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-08-23	Sturle Sunde	NF	no factor from 2^63 to 2^64