4 810 087 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2612310148831	13	41.2	old
257512929938575068007	21	67.8	2019-06-06 13:25:35

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-19	kkmrkkblmbrbk	FCC540D07E1ABF43	1	2844815	5	3
Verified (Factored)	2018-03-27	Oliver Kruse	FCC540D07E1ABF43	1	1264187	5	3
Verified	2019-06-07	Daniel Bamberger	FCC540D07E1ABF43	2	190530	5	3

History

Date	User	Type	Result
2023-10-26	USAFSS	NF-PM1	B1=240000, B2=91991760
2019-06-07	Daniel Bamberger	C-PRP	M4810087/2612310148831/257512929938575068007 : FCC540D07E1ABF43 PRP: Verified PRP without proof (not generated)
2019-06-06	_p95holder_	F-ECM	Factor: 257512929938575068007 / (ECM curve 2, B1=50000, B2=5000000)
2018-03-27	Oliver Kruse	C-PRP	M4810087/2612310148831 : FCC540D07E1ABF43 PRP: Verified PRP without proof (not generated)
2017-11-19	kkmrkkblmbrbk	C-PRP	M4810087/2612310148831 : FCC540D07E1ABF43 PRP: Verified PRP without proof (not generated)