79 403 503 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 =	670000
B2 =	13400000

Status	Date	User	Residue	Shift
Unverified	2017-02-24	curtisc	B2F57A2F7682E3__	30082605

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-10-31	lhunt	LL double-check	LL	19.27 %	2025-11-18

History

Date	User	Type	Result
2025-08-03	Jurzal	NF	no factor from 2^75 to 2^76
2017-02-24	curtisc	C-LL	B2F57A2F7682E3__
2016-09-21	bam	NF-PM1	B1=670000, B2=13400000
2016-08-11	Mark Rose	NF	no factor from 2^74 to 2^75
2016-08-11	Mark Rose	NF	no factor from 2^73 to 2^74
2016-08-07	cuBerBruce	NF	no factor from 2^72 to 2^73
2016-02-22	Judge Hale	NF	no factor from 2^71 to 2^72
2014-02-27	-Anonymous-	NF	no factor from 2^70 to 2^71
2013-02-04	wangyun183	NF	no factor from 2^69 to 2^70
2012-04-18	giheff	NF	no factor from 2^68 to 2^69
2011-04-10	Carsten Kossendey	NF	no factor from 2^67 to 2^68
2011-04-10	Carsten Kossendey	NF	no factor from 2^65 to 2^67
2010-11-26	riccardo uberti	NF	no factor from 2^64 to 2^65
2009-05-29	Architects Cubed	NF	no factor from 2^63 to 2^64