15 137 279 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
659794471249368169562880601	27	89.1	2022-10-21 00:04:24

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2002-07-20	Jason Terry	2F7396B1E89B7957	12165053
Verified (Factored)	2006-05-12	Jene Hoare	2F7396B1E89B7957	6429163

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-05-27	Dobri	F5622BFDF828F42E	1	10742334	5	3

History

Date	User	Type	Result
2023-11-04	nordi	NF-PM1	B1=480000, B2=454342350
2023-10-22	nordi	NF-PM1	B1=480000
2023-05-27	slandrum	CERT	PRP Certification Proof certified good
2023-05-27	Dobri	C-PRP	M15137279/659794471249368169562880601 : F5622BFDF828F42E PRP proof power = 8 PRP: Verified Proof certified good
2022-10-21	ATH	F-PP1	Start=2/7, B1=1000000, Factor: 659794471249368169562880601
2021-10-15	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-02	SRBase	NF	no factor from 2^70 to 2^71
2021-06-29	lycorn	NF	no factor from 2^69 to 2^70
2017-10-11	ramgeis	NF	no factor from 2^68 to 2^69
2017-01-29	Conductor	NF	no factor from 2^67 to 2^68
2016-03-16	Mark Rose	NF	no factor from 2^65 to 2^66
2014-05-14	Nesowa	NF	no factor from 2^66 to 2^67