123 408 001 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 =	869000
B2 =	249870390

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-06-19	lhunt	6095352D0E7E1AE9	59444790	1	3

History

Date	User	Type	Result
2024-06-19	Huang Jian	CERT	PRP Certification CERT proof power = 8 Proof certified good
2024-06-19	lhunt	C-PRP	6095352D0E7E1AE9 PRP proof power = 8 PRP: Verified Proof certified good
2023-01-17	WillowW	NF-PM1	B1=869000, B2=249870390
2022-06-30	TheJudger	NF	no factor from 2^76 to 2^77
2021-09-02	Kriesel	NF	no factor from 2^75 to 2^76
2015-07-27	endless_mike	NF	no factor from 2^74 to 2^75
2015-07-27	endless_mike	NF	no factor from 2^73 to 2^74
2015-07-27	endless_mike	NF	no factor from 2^72 to 2^73
2015-07-27	endless_mike	NF	no factor from 2^71 to 2^72
2015-07-27	endless_mike	NF	no factor from 2^70 to 2^71
2015-06-11	Judge Hale	NF	no factor from 2^69 to 2^70
2015-06-11	Judge Hale	NF	no factor from 2^68 to 2^69
2015-06-11	Judge Hale	NF	no factor from 2^67 to 2^68
2014-11-12	sasaki	NF	no factor from 2^66 to 2^67
2012-09-02	Richard	NF	no factor from 2^65 to 2^66
2010-10-26	OS1	NF	no factor from 2^64 to 2^65
2010-05-21	Torchwood Institute	NF	no factor from 2^63 to 2^64