2 528 161 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
300846102679	12	38.1	old
6232361821337	13	42.5	2008-07-14 20:24:42
183029234274853543	18	57.3	2015-06-12 11:11:58

ECM

Digits	B1	Curves
25	50000	92 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 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	4A5FFF6229A0CD1C	3	1419118	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	4A5FFF6229A0CD1C	3	1970530	5	3

History

Date	User	Type	Result
2022-08-23	USAFSS	NF-PM1	B1=300000, B2=259451010
2017-12-01	storm5510	C-PRP	M2528161/300846102679/6232361821337/183029234274853543 : 4A5FFF6229A0CD1C
2017-10-14	Oliver Kruse	C-PRP	M2528161/300846102679/6232361821337/183029234274853543 : 4A5FFF6229A0CD1C
2015-06-12	TJAOI	F	Factor: 183029234274853543
2008-07-14	George Woltman	F-ECM	Factor: 6232361821337

Username
Password