2 381 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is PRP (Probable-Prime).

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
4902754929329	13	42.2	old
6680044871611436077197194505521	31	102.4	old
901939223649310421767556825677135846954351070231	48	159.3	2012-07-22 23:12:03

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	No proof (small exponent)	2017-11-09	kkmrkkblmbrbk	PRP_PRP_PRP_PRP_	3	694	1	3

History

Date	User	Type	Result
2017-11-09	kkmrkkblmbrbk	P-PRP	M2381/4902754929329/6680044871611436077197194505521/901939223649310421767556825677135846954351070231 PRP Cofactor
2012-07-22	Michael Kenn	F-ECM	Factor: 901939223649310421767556825677135846954351070231

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