2 610 791 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
5221583	7	22.3	old
271728593580436649	18	57.9	2015-07-27 11:41:49

ECM

Digits	B1	Curves
25	50000	84 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^66 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	EDD0C2074FAF171B	2	239331	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	EDD0C2074FAF171B	2	2300419	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	M2610791/5221583/271728593580436649 : EDD0C2074FAF171B
2017-10-15	Oliver Kruse	C-PRP	M2610791/5221583/271728593580436649 : EDD0C2074FAF171B
2015-07-27	TJAOI	F	Factor: 271728593580436649

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