2 639 597 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
660514059654047	15	49.2	old
8623482690682129	16	52.9	2014-08-29 11:46:59

ECM

Digits	B1	Curves
25	50000	125 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 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)	2017-10-18	Oliver Kruse	89A223730AA26243	2	1065932	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	89A223730AA26243	2	456268	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	M2639597/660514059654047/8623482690682129 : 89A223730AA26243
2017-10-18	Oliver Kruse	C-PRP	M2639597/660514059654047/8623482690682129 : 89A223730AA26243
2014-08-29	TJAOI	F	Factor: 8623482690682129

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