76 278 647 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 =	665000
B2 =	13133750

Status	Date	User	Residue	Shift
Unverified	2017-05-08	Sergey Nosov	3783C0BFC26655__	72238397

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-16	Luke Durant	549931B3C3B59E89	0	1	3

History

Date	User	Type	Result
2024-10-16	Luke Durant	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-16	Luke Durant	C-PRP	549931B3C3B59E89 PRP proof power = 9 PRP: Verified Proof certified good
2017-05-08	Sergey Nosov	C-LL	3783C0BFC26655__
2016-02-07	TheJudger	NF-PM1	B1=665000, B2=13133750, E=6
2016-01-25	AirSquirrels	NF	no factor from 2^74 to 2^75
2016-01-25	AirSquirrels	NF	no factor from 2^73 to 2^74
2016-01-25	AirSquirrels	NF	no factor from 2^72 to 2^73
2015-11-13	RichD0	NF	no factor from 2^71 to 2^72
2012-12-27	JeffreyH-8	NF	no factor from 2^70 to 2^71
2010-11-11	-Anonymous-	NF	no factor from 2^69 to 2^70
2010-11-05	-Anonymous-	NF	no factor from 2^68 to 2^69
2010-11-02	-Anonymous-	NF	no factor from 2^67 to 2^68
2010-11-01	Martin Prusa	NF	no factor from 2^66 to 2^67
2010-10-27	eon_blue_apocalypse	NF	no factor from 2^65 to 2^66
2010-08-25	xkey	NF	no factor from 2^64 to 2^65