8 260 349 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 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
9515922049	10	33.1	old
939235251358337	15	49.7	2008-09-08 04:28:39

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-09-28	storm5510	15FB04DA11A3B35B	2	3307498	5	3
Verified	PRP without proof (not generated)	2020-03-31	arnaud	15FB04DA11A3B35B	2	1750363	5	3

History

Date	User	Type	Result
2024-04-04	Stef42	NF-PM1	B1=976000, B2=2281600230
2020-03-31	arnaud	C-PRP	M8260349/9515922049/939235251358337 : 15FB04DA11A3B35B
2018-09-28	storm5510	C-PRP	M8260349/9515922049/939235251358337 : 15FB04DA11A3B35B
2008-09-08	Will Edgington	F	Factor: 939235251358337

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