2 179 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
248407	6	17.9	old
872880838101847103099257	24	79.5	old
18274230550099239490658159	26	83.9	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	16550 / 16550
55	110000000	40830 / 40830
60	260000000	61109 / 105362

Estimated T-Level: 57.9 ⓘ

TF below 2^187 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	6276E2334C215A33	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	6276E2334C215A33	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	6276E2334C215A33	3	1987	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	01F30268181AF094	3	1322	5	3
Verified	No proof (small exponent)	2024-01-27	Wentao Huang	01F30268181AF094	3	31	5	3
Verified	No proof (small exponent)	2025-10-06	Dobri	01F30268181AF094	3	1038	5	3

History

Date	User	Type	Result
2025-10-06	Dobri	C-PRP	M2179/248407/872880838101847103099257/18274230550099239490658159 : 01F30268181AF094
2025-04-03	masser	NF-PP1	Start=83/29, B1=4400000000, B2=4395600000000
2024-01-27	Wentao Huang	C-PRP	M2179/248407/872880838101847103099257/18274230550099239490658159 : 01F30268181AF094
2022-09-24	BloodIce	NF-PM1	B1=1000000000000, B2=1310722373655384690
2022-09-03	BloodIce	NF-PM1	B1=100000000000, B2=131072237364568500
2022-08-30	BloodIce	NF-PM1	B1=10000000000, B2=8197466515738500
2020-04-17	Oliver Kruse	C-PRP	M2179/248407/872880838101847103099257/18274230550099239490658159 : 01F30268181AF094
2017-12-07	ATH	C-PRP	M2179/248407/872880838101847103099257/18274230550099239490658159 : 6276E2334C215A33
2017-10-02	kkmrkkblmbrbk	C-PRP	M2179/248407/872880838101847103099257/18274230550099239490658159 : 6276E2334C215A33
2017-09-21	Oliver Kruse	C-PRP	M2179/known_factors : 6276E2334C215A33
2016-09-08	kkmrkkblmbrbk	NF-PM1	B1=500000000, B2=50000000000, E=12
2009-10-25	Carsten Kossendey	F-PM1	Factor: 216829710350365533339577133599