2 625 433 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
4562876533217	13	42.1	old
280131301454239	15	48.0	2014-03-21 12:33:16

ECM

Digits	B1	Curves
25	50000	137 / 280

Estimated T-Level: 22.4 ⓘ

TF below 2^70 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)	2017-10-17	Oliver Kruse	77D19375F099326A	2	841162	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	77D19375F099326A	2	2377513	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	M2625433/4562876533217/280131301454239 : 77D19375F099326A
2017-10-17	Oliver Kruse	C-PRP	M2625433/4562876533217/280131301454239 : 77D19375F099326A
2014-03-21	TJAOI	F	Factor: 280131301454239

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