2 641 543 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
42264689	8	25.3	old
151568023330543	15	47.1	2014-02-26 11:39:53

ECM

Digits	B1	Curves
25	50000	183 / 280

Estimated T-Level: 23.3 ⓘ

TF below 2^72 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)	2017-10-18	Oliver Kruse	BBE6BDC2F0907366	2	2225569	5	3
Verified	PRP without proof (not generated)	2017-12-03	storm5510	BBE6BDC2F0907366	2	272885	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-03	storm5510	C-PRP	M2641543/42264689/151568023330543 : BBE6BDC2F0907366
2017-10-18	Oliver Kruse	C-PRP	M2641543/42264689/151568023330543 : BBE6BDC2F0907366
2014-02-26	TJAOI	F	Factor: 151568023330543

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