9 239 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
800633263	9	29.6	old
15144454549026014073311	23	73.7	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	6873 / 16550

Estimated T-Level: 47.1 ⓘ

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	4148E3CB3F236A75	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	4148E3CB3F236A75	2	3556	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	A74135A25502AA15	2	7747	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	A74135A25502AA15	2	2730	5	3

History

Date	User	Type	Result
2025-04-10	masser	NF-PP1	Start=141/53, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9239/15144454549026014073311/800633263 : A74135A25502AA15
2023-07-10	JacobZ	NF-PM1	B1=63000000000, B2=255469764292442700
2022-01-03	ANONYMOUS	NF-PM1	B1=100000000, B2=5133438650340
2022-01-03	ANONYMOUS	NF-PM1	B1=10000000, B2=4998199206000
2020-04-17	Oliver Kruse	C-PRP	M9239/800633263/15144454549026014073311 : A74135A25502AA15
2017-10-12	kkmrkkblmbrbk	C-PRP	M9239/800633263/15144454549026014073311 : 4148E3CB3F236A75
2017-09-21	Oliver Kruse	C-PRP	M9239/800633263/15144454549026014073311 : 4148E3CB3F236A75
2017-09-21	Oliver Kruse	C-PRP	M9239/800633263/15144454549026014073311 : 4148E3CB3F236A75