8 260 457 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
49562743	8	25.6	old
908650271	9	29.8	2008-09-08 04:28:40
379274323382737	15	48.4	2014-04-04 10:22:43
8701698274357746239	19	62.9	2016-11-08 12:13:51

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-09-28	storm5510	256836266A7F691C	4	5439483	5	3
Verified	PRP without proof (not generated)	2020-03-29	oodaira	256836266A7F691C	4	735344	5	3

History

Date	User	Type	Result
2024-03-02	Stef42	NF-PM1	B1=3000000, B2=5772694200
2020-03-29	oodaira	C-PRP	M8260457/49562743/908650271/379274323382737/8701698274357746239 : 256836266A7F691C
2018-09-28	storm5510	C-PRP	M8260457/49562743/908650271/379274323382737/8701698274357746239 : 256836266A7F691C
2016-11-08	TJAOI	F	Factor: 8701698274357746239
2014-04-04	TJAOI	F	Factor: 379274323382737
2008-09-08	Will Edgington	F	Factor: 908650271