9 439 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
273523343	9	28.0	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	6576 / 16550

Estimated T-Level: 47.0 ⓘ

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

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	523AFC680D067042	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	523AFC680D067042	1	6720	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	88C65D7159AFC6C4	1	2787	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	88C65D7159AFC6C4	1	2881	5	3

History

Date	User	Type	Result
2025-04-02	masser	NF-PP1	Start=150/17, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9439/273523343 : 88C65D7159AFC6C4
2023-06-30	JacobZ	NF-PM1	B1=61000000000, B2=254995794420917550
2022-02-03	ANONYMOUS	NF-PM1	B1=100000000, B2=30555685210050
2022-02-03	-anonymous-	NF-PM1	B1=50000, B2=15277839797220
2020-04-17	Oliver Kruse	C-PRP	M9439/273523343 : 88C65D7159AFC6C4
2017-10-12	kkmrkkblmbrbk	C-PRP	M9439/273523343 : 523AFC680D067042
2017-09-21	Oliver Kruse	C-PRP	M9439/273523343 : 523AFC680D067042
2017-09-21	Oliver Kruse	C-PRP	M9439/273523343 : 523AFC680D067042