79 324 789 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

TF

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	665000
B2 =	12801250

Status	Date	User	Residue	Shift
Unverified	2017-01-22	delamath	B2945C30BF8D99__	59798078

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-10-09	skippyd	LL double-check	LL	78.23 %	2025-10-21

History

Date	User	Type	Result
2025-08-12	ElectricBill	NF	no factor from 2^75 to 2^76
2017-01-22	delamath	C-LL	B2945C30BF8D99__
2016-09-06	Massimo Cappelli (ik5pwa)	NF-PM1	B1=665000, B2=12801250
2016-08-14	TheJudger	NF	no factor from 2^74 to 2^75
2016-08-14	TheJudger	NF	no factor from 2^73 to 2^74
2016-08-10	RichD0	NF	no factor from 2^72 to 2^73
2016-02-21	RichD0	NF	no factor from 2^71 to 2^72
2013-01-22	Florimond C.	NF	no factor from 2^70 to 2^71
2010-12-03	Commaster	NF	no factor from 2^69 to 2^70
2010-12-02	-Anonymous-	NF	no factor from 2^68 to 2^69
2010-11-25	-Anonymous-	NF	no factor from 2^67 to 2^68
2010-11-22	sunithaya	NF	no factor from 2^66 to 2^67
2010-11-20	sunithaya	NF	no factor from 2^65 to 2^66
2009-07-01	Patrik Johansson	NF	no factor from 2^64 to 2^65
2009-05-30	Architects Cubed	NF	no factor from 2^63 to 2^64