128 740 169 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 =	907000
B2 =	247107630

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-08-25	Luke Durant	43D5608484EE3963	24679592	1	3

History

Date	User	Type	Result
2024-08-25	o-jill	CERT	PRP Certification CERT proof power = 8 Proof certified good
2024-08-25	Luke Durant	C-PRP	43D5608484EE3963 PRP proof power = 8 PRP: Verified Proof certified good
2024-07-29	Chuck	NF-PM1	B1=907000, B2=247107630
2023-03-04	TravisJank	NF	no factor from 2^76 to 2^77
2023-03-04	TravisJank	NF	no factor from 2^75 to 2^76
2022-12-23	SRBase	NF	no factor from 2^74 to 2^75
2019-06-14	Niels_Mache_Nextcloud	NF	no factor from 2^73 to 2^74
2019-06-14	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2016-02-22	SourceBinary.com	NF	no factor from 2^71 to 2^72
2016-02-19	symallad	NF	no factor from 2^70 to 2^71
2015-11-28	La Güira	NF	no factor from 2^69 to 2^70
2015-11-28	La Güira	NF	no factor from 2^68 to 2^69
2015-11-28	La Güira	NF	no factor from 2^67 to 2^68
2015-01-11	subgenius	NF	no factor from 2^66 to 2^67
2012-10-01	Andrew B	NF	no factor from 2^65 to 2^66
2010-11-08	oilwarzonedotcom	NF	no factor from 2^64 to 2^65
2010-05-29	oodaira	NF	no factor from 2^63 to 2^64