78 706 967 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 2⁷⁵

P-1

B1 =	665000
B2 =	12801250

Status	Date	User	Residue	Shift
Unverified	2017-05-03	Shnobel	419494B12EB7A1__	22611954

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-20	Luke Durant	82E5061CC5FB9F92	0	1	3

History

Date	User	Type	Result
2024-10-20	Luke Durant	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-20	Luke Durant	C-PRP	82E5061CC5FB9F92 PRP proof power = 9 PRP: Verified Proof certified good
2017-05-03	Shnobel	C-LL	419494B12EB7A1__
2016-06-27	basey	NF-PM1	B1=665000, B2=12801250
2016-06-17	AirSquirrels	NF	no factor from 2^74 to 2^75
2016-06-12	RichD0	NF	no factor from 2^73 to 2^74
2016-06-10	Greg	NF	no factor from 2^72 to 2^73
2015-09-01	RichD0	NF	no factor from 2^71 to 2^72
2013-01-20	Marius Zens	NF	no factor from 2^70 to 2^71
2011-02-02	-Anonymous-	NF	no factor from 2^69 to 2^70
2011-01-23	-Anonymous-	NF	no factor from 2^68 to 2^69
2011-01-17	Deltron	NF	no factor from 2^67 to 2^68
2011-01-15	Penguin66	NF	no factor from 2^66 to 2^67
2011-01-12	GrunwalderGIMP	NF	no factor from 2^65 to 2^66
2011-01-11	cnaTb_xo4y	NF	no factor from 2^64 to 2^65