5 438 141 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 2⁶⁸

TF target 2⁶⁶

Factored

Factor	Digits	Bits	Date
741816422263849	15	49.4	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-12-01	storm5510	41E61AE8A77C85D9	1	2431049	5	3
Verified	PRP without proof (not generated)	2018-03-07	kkmrkkblmbrbk	41E61AE8A77C85D9	1	1698771	5	3

History

Date	User	Type	Result
2025-05-29	Sid & Andy	NF-PM1	B1=5100000, B2=8563943850
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-03-07	kkmrkkblmbrbk	C-PRP	M5438141/741816422263849 : 41E61AE8A77C85D9
2017-12-01	storm5510	C-PRP	M5438141/741816422263849 : 41E61AE8A77C85D9

Username
Password