78 137 597 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 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift
Unverified	2017-03-27	Tim Towers	D9169B8B13A59F__	56344364

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-22	Luke Durant	3B9D855B038891D3	0	1	3

History

Date	User	Type	Result
2024-10-22	Luke Durant	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-22	Luke Durant	C-PRP	3B9D855B038891D3 PRP proof power = 9 PRP: Verified Proof certified good
2024-03-24	Sid & Andy	NF	no factor from 2^75 to 2^76
2017-03-27	Tim Towers	C-LL	D9169B8B13A59F__
2016-06-05	TheJudger	NF-PM1	B1=655000, B2=13100000, E=12
2016-05-25	PDW	NF	no factor from 2^74 to 2^75
2016-05-25	PDW	NF	no factor from 2^73 to 2^74
2016-05-22	Bdot	NF	no factor from 2^72 to 2^73
2016-04-05	Mark Rose	NF	no factor from 2^62 to 2^64
2014-03-03	snme2pm1	NF	no factor from 2^71 to 2^72
2013-05-23	JMGarcia	NF	no factor from 2^70 to 2^71
2013-02-12	SMoffat	NF	no factor from 2^69 to 2^70
2013-02-11	Clown_Royal	NF	no factor from 2^68 to 2^69
2011-04-02	ticky_chalk	NF	no factor from 2^67 to 2^68
2011-01-03	dtlgc	NF	no factor from 2^66 to 2^67
2010-12-28	arnaud	NF	no factor from 2^65 to 2^66
2010-12-23	jesterking	NF	no factor from 2^64 to 2^65