77 387 393 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift
Unverified	2016-12-25	Chun sung soo	D4C4A558C90E1B__	59097358

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-25	Luke Durant	B24364BC820C4956	0	1	3

History

Date	User	Type	Result
2024-10-25	Luke Durant	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-25	Luke Durant	C-PRP	B24364BC820C4956 PRP proof power = 9 PRP: Verified Proof certified good
2016-12-25	Chun sung soo	C-LL	D4C4A558C90E1B__
2016-04-03	Mark Rose	NF	no factor from 2^61 to 2^64
2016-03-04	Filen	NF-PM1	B1=655000, B2=13100000, E=12
2016-02-22	AirSquirrels	NF	no factor from 2^74 to 2^75
2016-02-21	AirSquirrels	NF	no factor from 2^73 to 2^74
2016-02-21	AirSquirrels	NF	no factor from 2^72 to 2^73
2015-12-07	endless_mike	NF	no factor from 2^71 to 2^72
2012-12-30	La Güira	NF	no factor from 2^70 to 2^71
2011-03-07	Per Jessen	NF	no factor from 2^69 to 2^70
2011-03-03	Per Jessen	NF	no factor from 2^68 to 2^69
2011-02-27	Giselher	NF	no factor from 2^67 to 2^68
2011-02-19	ptcr	NF	no factor from 2^66 to 2^67
2011-02-19	lexatref	NF	no factor from 2^65 to 2^66
2010-10-07	Jordi Sentmenat	NF	no factor from 2^64 to 2^65