9 949 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
8098487	7	22.9	old
2960435785196015005138206271354321310206117159	46	151.1	2024-08-10 19:05:29

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	6182 / 16550

Estimated T-Level: 46.9 ⓘ

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
Factored	No proof (small exponent)	2017-09-21	Oliver Kruse	679233B330B00D82	1	0	1	3
Factored	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	679233B330B00D82	1	2712	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	1678883B905A1848	1	8909	5	3
Factored	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	1678883B905A1848	1	8726	5	3
Verified	No proof (small exponent)	2024-08-10	nordi	1678883B905A1848	2	7288	5	3
Verified	No proof (small exponent)	2025-10-06	Dobri	1678883B905A1848	2	2885	5	3

History

Date	User	Type	Result
2025-10-06	Dobri	C-PRP	M9949/8098487/2960435785196015005138206271354321310206117159 : 1678883B905A1848
2025-03-17	masser	NF-PP1	Start=98/37, B1=1000000000, B2=999000000000
2024-08-10	nordi	C-PRP	M9949/8098487/2960435785196015005138206271354321310206117159 : 1678883B905A1848
2024-08-10	nordi	F-ECM	Factor: 2960435785196015005138206271354321310206117159 / ECM curve 1160, B1=44000000, B2=1117403522235, Edwards Sigma=666175522102182
2024-07-01	kkmrkkblmbrbk	C-PRP	M9949/8098487 : 1678883B905A1848
2023-06-11	JacobZ	NF-PM1	B1=58000000000, B2=241250667952694400
2022-11-24	Kevin_9611	NF-PM1	B1=1000000000, B2=100294988083290
2022-02-05	Joss	NF-PM1	B1=1000000, B2=6010952007060
2020-04-17	Oliver Kruse	C-PRP	M9949/8098487 : 1678883B905A1848
2017-10-12	kkmrkkblmbrbk	C-PRP	M9949/8098487 : 679233B330B00D82
2017-09-21	Oliver Kruse	C-PRP	M9949/8098487 : 679233B330B00D82
2017-09-21	Oliver Kruse	C-PRP	M9949/8098487 : 679233B330B00D82