78 930 479 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 =	4267000
B2 =	1729583310

Status	Date	User	Residue	Shift
Unverified	2017-12-04	aurashift	3B505FE0F39925__	56591997

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-07-03	Franklin Webber	LL double-check	LL	81.15 %	2025-10-09

History

Date	User	Type	Result
2025-10-03	Ensigma	NF-PM1	B1=4267000, B2=1729583310
2025-07-11	Sid & Andy	NF	no factor from 2^75 to 2^76
2017-12-04	aurashift	C-LL	3B505FE0F39925__
2016-07-19	arnaud	NF-PM1	B1=665000, B2=12635000
2016-07-07	AirSquirrels	NF	no factor from 2^74 to 2^75
2016-07-07	AirSquirrels	NF	no factor from 2^73 to 2^74
2016-07-06	RichD0	NF	no factor from 2^72 to 2^73
2016-02-10	RichD0	NF	no factor from 2^71 to 2^72
2013-02-11	Clown_Royal	NF	no factor from 2^70 to 2^71
2012-04-05	Perederiy Serg N.	NF	no factor from 2^69 to 2^70
2012-04-04	Perederiy Serg N.	NF	no factor from 2^68 to 2^69
2011-04-07	Carsten Kossendey	NF	no factor from 2^67 to 2^68
2011-01-27	-Anonymous-	NF	no factor from 2^66 to 2^67
2011-01-10	peppemelfi	NF	no factor from 2^65 to 2^66
2011-01-10	Peter Yu	NF	no factor from 2^64 to 2^65
2008-06-16	-Anonymous-	NF	no factor to 2^64