2 353 991 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
159817100476217	15	47.2	old
18659550361354417	17	54.1	2014-10-29 12:40:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	126 / 640

Estimated T-Level: 26.0 ⓘ

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)	2017-10-12	Oliver Kruse	222EED43F581D1DE	2	0	1	3
Verified	PRP without proof (not generated)	2017-11-24	storm5510	222EED43F581D1DE	2	910241	1	3

History

Date	User	Type	Result
2018-04-27	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-24	storm5510	C-PRP	M2353991/159817100476217/18659550361354417 : 222EED43F581D1DE
2017-10-12	Oliver Kruse	C-PRP	M2353991/159817100476217/18659550361354417 : 222EED43F581D1DE
2014-10-29	TJAOI	F	Factor: 18659550361354417

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