72 991 973 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 2⁷⁴

P-1

B1 =	1095000
B2 =	32028750

Status	Date	User	Residue	Shift
Unverified	2017-06-01	basey	DFBC792C79B58A__	21768899

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2024-04-09	Marlowo	LL double-check	LL	0.10 %	2024-04-09

History

Date	User	Type	Result
2017-06-01	basey	C-LL	DFBC792C79B58A__
2016-10-14	SADMASTER	NF	no factor from 2^65 to 2^66
2016-05-18	Bdot	NF	no factor from 2^74 to 2^75
2014-07-30	owftheevil	NF-PM1	B1=1095000, B2=32028750, e=6
2014-07-18	Chuck	NF	no factor from 2^73 to 2^74
2014-07-18	Chuck	NF	no factor from 2^72 to 2^73
2014-07-17	Chuck	NF	no factor from 2^71 to 2^72
2013-07-08	SMoffat	NF	no factor from 2^70 to 2^71
2011-03-11	Tom Duell	NF	no factor to 2^70
2011-03-06	-Anonymous-	NF	no factor from 2^67 to 2^68
2011-03-03	Zet_kor	NF	no factor from 2^66 to 2^67
2010-10-28	SADMASTER	NF	no factor from 2^65 to 2^66
2010-06-08	SAHS Math Dept	NF	no factor from 2^64 to 2^65
2008-09-19	Wojciech Florek	NF	no factor to 2^64