2 628 107 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
33876299231	11	35.0	old
210393321731427911	18	57.5	2015-06-29 14:19:25

ECM

Digits	B1	Curves
25	50000	197 / 280

Estimated T-Level: 23.5 ⓘ

TF below 2^73 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)	2017-10-17	Oliver Kruse	8E46829F04C70F5C	2	1511803	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	8E46829F04C70F5C	2	1073689	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2628107/33876299231/210393321731427911 : 8E46829F04C70F5C
2017-10-17	Oliver Kruse	C-PRP	M2628107/33876299231/210393321731427911 : 8E46829F04C70F5C
2015-06-29	TJAOI	F	Factor: 210393321731427911

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