128 946 043 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 =	1124000
B2 =	1501684800

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-08-18	Luke Durant	E8CB66FE772A0542	0	1	3

History

Date	User	Type	Result
2024-08-18	Stefan G Hoffmann	CERT	PRP Certification CERT proof power = 8 Proof certified good
2024-08-18	Luke Durant	C-PRP	E8CB66FE772A0542 PRP proof power = 8 PRP: Verified Proof certified good
2024-07-29	Luke Durant	NF-PM1	B1=1124000, B2=1501684800
2023-02-11	TravisJank	NF	no factor from 2^76 to 2^77
2023-02-11	TravisJank	NF	no factor from 2^75 to 2^76
2022-12-19	Lars H	NF	no factor from 2^74 to 2^75
2019-05-21	Niels_Mache_Nextcloud	NF	no factor from 2^73 to 2^74
2019-05-21	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2016-05-11	EPF	NF	no factor from 2^71 to 2^72
2016-05-04	WileECoyote	NF	no factor from 2^70 to 2^71
2015-10-30	-Anonymous-	NF	no factor from 2^69 to 2^70
2015-10-25	Smok_bmv	NF	no factor from 2^68 to 2^69
2015-09-12	el grocco	NF	no factor from 2^67 to 2^68
2015-01-19	Richard	NF	no factor from 2^66 to 2^67
2012-10-02	sasaki3	NF	no factor from 2^65 to 2^66
2010-11-09	Torchwood Institute	NF	no factor from 2^64 to 2^65
2010-05-30	carlos56	NF	no factor from 2^63 to 2^64