2 475 787 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
15448910881	11	33.8	old
151648502919641657	18	57.1	2015-05-22 11:07:00

ECM

Digits	B1	Curves
25	50000	123 / 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)	2017-10-14	Oliver Kruse	5F8A5E4ECB08B4CA	2	2281944	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	5F8A5E4ECB08B4CA	2	1372799	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-29	storm5510	C-PRP	M2475787/15448910881/151648502919641657 : 5F8A5E4ECB08B4CA
2017-10-14	Oliver Kruse	C-PRP	M2475787/15448910881/151648502919641657 : 5F8A5E4ECB08B4CA
2015-05-22	TJAOI	F	Factor: 151648502919641657

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