2 441 407 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
5429811238351	13	42.3	old

ECM

Digits	B1	Curves
25	50000	238 / 280

Estimated T-Level: 24.3 ⓘ

TF below 2^76 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)	2017-10-13	Oliver Kruse	81B87BD9A52F82D6	1	1713114	5	3
Verified	PRP without proof (not generated)	2017-11-27	storm5510	81B87BD9A52F82D6	1	1985891	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-27	storm5510	C-PRP	M2441407/5429811238351 : 81B87BD9A52F82D6
2017-10-13	Oliver Kruse	C-PRP	M2441407/5429811238351 : 81B87BD9A52F82D6

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