13 278 721 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
398361631	9	28.6	old
3557741160089	13	41.7	2008-10-01 00:44:15
100287673139711	15	46.5	2008-10-01 00:44:15
8525646974725536397057	22	72.9	2021-08-18 13:27:47

ECM

Digits	B1	Curves
25	50000	0 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-06-29	Funky Waddle	C4CE0C3933640893	4	8954700	5	3

History

Date	User	Type	Result
2022-06-29	nkl	CERT	PRP Certification Proof certified good
2022-06-29	Funky Waddle	C-PRP	M13278721/398361631/3557741160089/100287673139711/8525646974725536397057 : C4CE0C3933640893 PRP proof power = 8 PRP: Verified Proof certified good
2022-06-22	nordi	NF-PM1	B1=300000, B2=210129150
2022-06-20	nordi	NF-PM1	B1=300000
2021-08-18	ATH	F-PP1	Start=2/7, B1=100000, Factor: 8525646974725536397057
2008-10-01	markr	F	Factor: 100287673139711
2008-10-01	markr	F	Factor: 3557741160089