9 721 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
14144348109786497832711164593	29	93.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	6875 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^151 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	D5DE2C60D1D59BA0	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	D5DE2C60D1D59BA0	1	2646	1	3
Verified	2020-04-17	Oliver Kruse	A21123E5A7DC5B37	1	8183	5	3
Verified	2024-07-01	kkmrkkblmbrbk	A21123E5A7DC5B37	1	7195	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M9721/14144348109786497832711164593 : A21123E5A7DC5B37 PRP: Verified PRP without proof (small exponent)
2023-06-18	JacobZ	NF-PM1	B1=59000000000, B2=250256095608669150
2022-02-03	-Anonymous-	NF-PM1	B1=50000, B2=15277839797220
2020-04-17	Oliver Kruse	C-PRP	M9721/14144348109786497832711164593 : A21123E5A7DC5B37 PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M9721/14144348109786497832711164593 : D5DE2C60D1D59BA0 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9721/14144348109786497832711164593 : D5DE2C60D1D59BA0 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9721/14144348109786497832711164593 : D5DE2C60D1D59BA0 PRP without proof (not generated)