147 405 989 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 2⁷⁸

TF target 2⁷⁷

P-1

B1 =	1219000
B2 =	1354629870

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-02-01	GdS	E10316B45F5AD301	0	1	3

History

Date	User	Type	Result
2025-02-01	Ra1nb0w	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-02-01	GdS	C-PRP	E10316B45F5AD301 PRP proof power = 10 PRP: Verified Proof certified good
2024-10-20	Luke Durant	NF-PM1	B1=1219000, B2=1354629870
2024-10-08	Luke Durant	NF	no factor from 2^77 to 2^78
2024-08-07	Yves de Wandelaar	NF	no factor from 2^76 to 2^77
2024-07-23	SRBase	NF	no factor from 2^75 to 2^76
2023-01-31	SRBase	NF	no factor from 2^74 to 2^75
2021-11-12	SRBase	NF	no factor from 2^73 to 2^74
2020-05-02	ViliamF	NF	no factor from 2^72 to 2^73
2016-12-02	guru	NF	no factor from 2^71 to 2^72
2016-12-01	guru	NF	no factor from 2^70 to 2^71
2016-12-01	guru	NF	no factor from 2^69 to 2^70
2016-12-01	guru	NF	no factor from 2^68 to 2^69
2016-03-21	Derek	NF	no factor from 2^67 to 2^68
2015-03-08	Jan Kuipers	NF	no factor from 2^66 to 2^67
2013-01-01	sasaki3	NF	no factor from 2^65 to 2^66
2011-01-03	Richard	NF	no factor from 2^64 to 2^65