2 610 191 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 2⁶³

Factored

Factor	Digits	Bits	Date
67864967	8	26.0	old
4311876205941361	16	51.9	2014-03-31 01:28:05

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-15	Oliver Kruse	ABCFF0038327D2BB	2	389236	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	ABCFF0038327D2BB	2	1477886	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2610191/67864967/4311876205941361 : ABCFF0038327D2BB
2017-10-15	Oliver Kruse	C-PRP	M2610191/67864967/4311876205941361 : ABCFF0038327D2BB
2014-03-31	pdazzl	F	Factor: 4311876205941361 / TF: 48-54

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