2 478 653 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
669236311	9	29.3	old
7703866688159	13	42.8	2008-09-30 14:37:05

ECM

Digits	B1	Curves
25	50000	144 / 280

Estimated T-Level: 22.6 ⓘ

TF below 2^70 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)	2017-10-14	Oliver Kruse	CC25098A0A6CE723	2	1908009	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	CC25098A0A6CE723	2	1561045	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-29	storm5510	C-PRP	M2478653/669236311/7703866688159 : CC25098A0A6CE723
2017-10-14	Oliver Kruse	C-PRP	M2478653/669236311/7703866688159 : CC25098A0A6CE723
2008-09-30	markr	F	Factor: 7703866688159

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