5 123 873 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁵

Factored

Factor	Digits	Bits	Date
43204497137	11	35.3	old
92563288380047	14	46.4	2014-02-12 11:27:03

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-11-22	storm5510	4CF15F209434AED5	2	4349809	5	3
Verified	PRP without proof (not generated)	2018-01-19	kkmrkkblmbrbk	4CF15F209434AED5	2	3979668	5	3

History

Date	User	Type	Result
2025-02-11	Sid & Andy	NF	no factor TF: 68-70
2025-01-18	Sid & Andy	NF-PM1	B1=3800000, B2=10219948200
2024-07-30	cramsey87	NF-PM1	B1=300000, B2=104169030
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-01-19	kkmrkkblmbrbk	C-PRP	M5123873/43204497137/92563288380047 : 4CF15F209434AED5
2017-11-22	storm5510	C-PRP	M5123873/43204497137/92563288380047 : 4CF15F209434AED5
2014-02-12	TJAOI	F	Factor: 92563288380047