400 069 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
17384946805580300647271050027369	32	103.8	2013-07-18 18:50:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	550 / 640

Estimated T-Level: 29.3 ⓘ

TF below 2^92 is very unlikely to find new factors due to ECM effort.

Status	User	Residue	Shift	Software
Factored	David Brlej	04FFBEADB65852E3	0	Windows 16-bit,Prime95,v11,(aka WB)
Factored	Richard Crandall	04FFBEADB65852E3	0	Crandall,(aka X)
Factored	David Slowinski	12E3	0	Cray,Slowinski,(aka D5)
Factored	Eivind Triel	04FFBEADB65852E3	217251	Windows,Prime95,v24 final,(aka Wc1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-23	Oliver Kruse	6469452311599D54	1	0	1	3
Verified	No proof (small exponent)	2017-11-02	kkmrkkblmbrbk	6469452311599D54	1	302867	1	3
Verified	No proof (small exponent)	2020-04-18	Oliver Kruse	F4B99626EAC3FC8F	1	319727	5	3
Verified	Certified Good	2024-10-14	kkmrkkblmbrbk	F4B99626EAC3FC8F	1	219569	5	3

History

Date	User	Type	Result
2026-04-12	MooMoo2	NF-PM1	B1=12000000, B2=113865381630
2024-10-14	LOBES	CERT	Proof certified good
2024-10-14	kkmrkkblmbrbk	C-PRP	Proof Certified Good Proof Power: 5
2022-03-07	LordJulius	NF	no factor TF: 58-59
2020-04-18	Oliver Kruse	C-PRP	M400069/17384946805580300647271050027369 : F4B99626EAC3FC8F
2017-11-02	kkmrkkblmbrbk	C-PRP	M400069/17384946805580300647271050027369 : 6469452311599D54
2017-09-23	Oliver Kruse	C-PRP	M400069/17384946805580300647271050027369 : 6469452311599D54
2016-03-17	alpertron	NF-PM1	B1=10000000, B2=1000000000, E=12
2016-03-16	alpertron	NF-PM1	B1=3000000, B2=100000000, E=12
2013-07-18	Youcef L	F-ECM	Factor: 17384946805580300647271050027369
2012-11-11	dbaugh	NF	no factor TF: 61-62
2011-09-22	Richard B. Woods	NF	no factor TF: 60-61
2011-02-08	monst	NF	no factor TF: 60-61
2008-11-23	monst	NF	no factor TF: 59-60
2003-11-16	-anonymous-	NF	no factor TF: 1-58
2003-03-16	-anonymous-	NF-PM1	B1=131072, B2=13107200, E=30
2002-08-17	-anonymous-	NF-PM1	B1=65536, B2=6553600, E=12
2002-06-15	-anonymous-	NF-PM1	B1=32768, B2=3276800, E=12
2002-01-02	-anonymous-	NF	no factor TF: 1-57
2001-11-14	-anonymous-	NF-PM1	B1=50000, B2=1000000
2001-03-17	-anonymous-	NF	no factor TF: 1-56

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