2 528 599 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
10316683921	11	33.3	old
139320747703	12	37.0	2008-07-14 20:24:42
12264413157721	14	43.5	2013-12-20 18:37:15

ECM

Digits	B1	Curves
25	50000	128 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 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	AC7C181461E99790	3	1455866	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	AC7C181461E99790	3	1390549	5	3

History

Date	User	Type	Result
2022-08-23	USAFSS	NF-PM1	B1=300000, B2=259451010
2017-12-01	storm5510	C-PRP	M2528599/10316683921/139320747703/12264413157721 : AC7C181461E99790
2017-10-14	Oliver Kruse	C-PRP	M2528599/10316683921/139320747703/12264413157721 : AC7C181461E99790
2013-12-20	TJAOI	F	Factor: 12264413157721
2008-07-14	George Woltman	F-ECM	Factor: 139320747703

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