136 856 861 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 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	1172000
B2 =	1488979800

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-09-16	q64	29FFF061908C38F9	0	1	3

History

Date	User	Type	Result
2024-09-16	EarnestPopover	CERT	PRP Certification CERT proof power = 10 Proof certified good
2024-09-16	q64	C-PRP	29FFF061908C38F9 PRP proof power = 10 PRP: Verified Proof certified good
2024-07-08	Luke Durant	NF-PM1	B1=1172000, B2=1488979800
2024-07-05	Richard	NF	no factor from 2^76 to 2^77
2024-07-04	Richard	NF	no factor from 2^75 to 2^76
2023-01-10	SRBase	NF	no factor from 2^74 to 2^75
2016-03-26	CacheOut	NF	no factor from 2^73 to 2^74
2016-03-26	CacheOut	NF	no factor from 2^72 to 2^73
2016-03-26	CacheOut	NF	no factor from 2^71 to 2^72
2016-03-22	Choi4KANG	NF	no factor from 2^70 to 2^71
2016-01-09	La Güira	NF	no factor from 2^69 to 2^70
2016-01-09	La Güira	NF	no factor from 2^68 to 2^69
2016-01-09	La Güira	NF	no factor from 2^67 to 2^68
2015-02-01	tsc	NF	no factor from 2^66 to 2^67
2012-11-09	tsc	NF	no factor from 2^65 to 2^66
2010-11-29	Torchwood Institute	NF	no factor from 2^64 to 2^65
2010-06-10	sasaki3	NF	no factor from 2^63 to 2^64