2 331 283 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 2⁶²

Factored

Factor	Digits	Bits	Date
14965307538353	14	43.8	old
83607474128073431	17	56.2	2015-03-17 12:47:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 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)	2017-10-11	Oliver Kruse	D163719B9B5596D6	2	0	1	3
Verified	PRP without proof (not generated)	2017-11-23	storm5510	D163719B9B5596D6	2	1880977	1	3

History

Date	User	Type	Result
2021-04-19	ViliamF	NF-PM1	B1=5000000, B2=500000000
2018-03-18	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2017-11-23	storm5510	C-PRP	M2331283/14965307538353/83607474128073431 : D163719B9B5596D6
2017-10-11	Oliver Kruse	C-PRP	M2331283/14965307538353/83607474128073431 : D163719B9B5596D6
2015-03-17	TJAOI	F	Factor: 83607474128073431

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