5 939 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
617657	6	19.2	old
706741001	9	29.4	old
1087467498637621069177269818801643959	37	119.7	2016-10-20 21:04:07
8941854997453956511728280870260701671707433	43	142.7	2020-11-14 13:52:25

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	4432 / 16550

Estimated T-Level: 46.3 ⓘ

TF below 2^149 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)	2017-09-20	kkmrkkblmbrbk	6E9D0FCF25C7FB50	3	0	1	3
Factored	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	6E9D0FCF25C7FB50	3	0	1	3
Factored	No proof (small exponent)	2017-11-06	ATH	6E9D0FCF25C7FB50	3	392	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	ECAAA934B30DC1EB	3	2915	5	3
Verified	No proof (small exponent)	2020-11-14	mrh	ECAAA934B30DC1EB	4	379	5	3

History

Date	User	Type	Result
2025-05-25	masser	NF-PP1	Start=174/43, B1=1500000000, B2=1498500000000
2023-07-25	-anonymous-	NF-PM1	B1=42000000000, B2=171618195782983950
2021-07-06	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-11-14	mrh	C-PRP	M5939/617657/706741001/1087467498637621069177269818801643959/8941854997453956511728280870260701671707433 : ECAAA934B30DC1EB
2020-11-14	Ryan Propper	F-ECM	Factor: 8941854997453956511728280870260701671707433
2020-04-17	Oliver Kruse	C-PRP	M5939/617657/706741001/1087467498637621069177269818801643959 : ECAAA934B30DC1EB
2017-11-06	ATH	C-PRP	M5939/617657/706741001/1087467498637621069177269818801643959 : 6E9D0FCF25C7FB50
2017-10-02	kkmrkkblmbrbk	C-PRP	M5939/617657/706741001/1087467498637621069177269818801643959 : 6E9D0FCF25C7FB50
2017-09-20	kkmrkkblmbrbk	C-PRP	M5939/617657/706741001/1087467498637621069177269818801643959 : 6E9D0FCF25C7FB50
2016-10-20	kkmrkkblmbrbk	F-ECM	Factor: 1087467498637621069177269818801643959