104 558 407 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 2⁷⁶

TF target 2⁷⁶

P-1

B1 =	650000
B2 =	24000000

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-07-13	George Woltman	21473ACE0C038447	0	1	3

History

Date	User	Type	Result
2021-07-14	Knut Andreas Brungot	CERT	PRP Certification CERT proof power = 8 Proof certified good
2021-07-13	George Woltman	C-PRP	21473ACE0C038447 PRP proof power = 8 PRP: Verified Proof certified good
2021-06-30	Kriesel	NF-PM1	B1=650000, B2=24000000
2021-05-22	ViliamF	NF	no factor from 2^68 to 2^69
2021-03-03	1997rj7	NF	no factor from 2^75 to 2^76
2021-03-01	lobsterfordinner	NF	no factor from 2^74 to 2^75
2020-03-31	SRBase	NF	no factor from 2^73 to 2^74
2020-03-16	erick84mm	NF	no factor from 2^72 to 2^73
2018-01-05	el grocco	NF	no factor from 2^71 to 2^72
2015-03-27	Per Jessen	NF	no factor from 2^70 to 2^71
2015-03-19	driveByUpgrades	NF	no factor from 2^69 to 2^70
2015-01-10	Josh Famestad	NF	no factor from 2^68 to 2^69
2015-01-10	Brandon Vincent	NF	no factor from 2^67 to 2^68
2014-07-12	-Anonymous-	NF	no factor from 2^66 to 2^67
2012-05-06	OS1	NF	no factor from 2^65 to 2^66
2010-08-27	carlos56	NF	no factor from 2^64 to 2^65
2010-04-18	carlos56	NF	no factor from 2^63 to 2^64