2 434 217 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
7263703529	10	32.8	old
256447560299551	15	47.9	2008-09-30 14:37:01

ECM

Digits	B1	Curves
25	50000	165 / 280

Estimated T-Level: 22.9 ⓘ

TF below 2^71 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	32AF0DBE7F25F27E	2	557521	5	3
Verified	PRP without proof (not generated)	2017-11-27	storm5510	32AF0DBE7F25F27E	2	577611	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	M2434217/7263703529/256447560299551 : 32AF0DBE7F25F27E
2017-10-13	Oliver Kruse	C-PRP	M2434217/7263703529/256447560299551 : 32AF0DBE7F25F27E
2008-09-30	markr	F	Factor: 256447560299551

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