569 237 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
4553897	7	22.1	old
219024182017	12	37.7	2008-07-21 09:21:50
444510342457	12	38.7	2008-07-21 09:21:50
15113609969005981453105578885392831	35	113.5	2026-09-17 03:32:48

P-1 factors

Date	Factors	B1	B2
2026-09-17	15113609969005981453105578885392831	74597000	8219337246120

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	210 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 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)	2017-09-27	Oliver Kruse	4ABB25EE440C421F	3	0	1	3
Factored	No proof (small exponent)	2017-10-13	Oliver Kruse	4ABB25EE440C421F	3	328555	1	3
Factored	No proof (small exponent)	2017-12-15	ATH	4ABB25EE440C421F	3	400188	1	3
Factored	No proof (small exponent)	2020-04-19	Oliver Kruse	DC35D435CF5A3833	3	192567	5	3
Factored	Certified Good	2025-01-12	kkmrkkblmbrbk	DC35D435CF5A3833	3	339450	5	3
Verified	Certified Good	2026-09-23	mikr	DC35D435CF5A3833	4	488221	5	3

History

Date	User	Type	Result
2026-09-23	MasterThrawn	CERT	Proof certified good
2026-09-23	mikr	C-PRP	M569237/4553897/219024182017/444510342457/15113609969005981453105578885392831 : DC35D435CF5A3833 Proof Certified Good Proof Power: 6
2026-09-17	Jason Lynch	F-PM1	Factor: 15113609969005981453105578885392831 / B1=74597000, B2=8219337246120
2026-03-20	ViliamF	NF-PM1	B1=10000000, B2=310922121510
2025-01-12	mattashii	CERT	Proof certified good
2025-01-12	kkmrkkblmbrbk	C-PRP	M569237/4553897/219024182017/444510342457 : DC35D435CF5A3833 Proof Certified Good Proof Power: 6
2022-12-12	USAFSS	NF-PM1	B1=1750000, B2=5675249580
2020-04-19	Oliver Kruse	C-PRP	M569237/4553897/219024182017/444510342457 : DC35D435CF5A3833
2017-12-15	ATH	C-PRP	M569237/4553897/219024182017/444510342457 : 4ABB25EE440C421F
2017-10-13	Oliver Kruse	C-PRP	M569237/4553897/219024182017/444510342457 : 4ABB25EE440C421F
2017-09-27	Oliver Kruse	C-PRP	M569237/4553897/219024182017/444510342457 : 4ABB25EE440C421F
2008-07-21	J Feitsma	F	Factor: 444510342457
2008-07-21	J Feitsma	F	Factor: 219024182017