5 201 731 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁶

Factored

Factor	Digits	Bits	Date
185903259741631	15	47.4	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-11-22	storm5510	6EE2608D2F2018BC	1	4064336	5	3
Verified	PRP without proof (not generated)	2018-01-20	kkmrkkblmbrbk	6EE2608D2F2018BC	1	4548779	5	3

History

Date	User	Type	Result
2025-03-06	Sid & Andy	NF	no factor TF: 68-70
2022-11-14	Kevin_9611	NF-PM1	B1=400000, B2=55913340
2018-01-20	kkmrkkblmbrbk	C-PRP	M5201731/185903259741631 : 6EE2608D2F2018BC
2017-11-22	storm5510	C-PRP	M5201731/185903259741631 : 6EE2608D2F2018BC

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