8 277 851 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 2⁶⁸

Factored

Factor	Digits	Bits	Date
128931378923051849	18	56.8	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-09-29	rucio	AD6C07E95AF6DD12	1	4319661	5	3
Verified	PRP without proof (not generated)	2020-04-28	happy5214	AD6C07E95AF6DD12	1	3066874	5	3

History

Date	User	Type	Result
2024-04-07	Stef42	NF-PM1	B1=968000, B2=2344988100
2020-04-28	happy5214	C-PRP	M8277851/128931378923051849 : AD6C07E95AF6DD12
2018-09-29	rucio	C-PRP	M8277851/128931378923051849 : AD6C07E95AF6DD12
1998-09-06	-anonymous-	F	Factor: 128931378923051849

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