1 012 369 Exponent Status

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁷¹

TF target 2⁶⁰

Factored

Factor	Digits	Bits	Date
67883211890891016047061247	26	85.8	2025-01-27 18:36:32

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	284 / 640

Estimated T-Level: 27.2 ⓘ

TF below 2^85 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Ken Kriesel	9E2F8A4244E72AEB	0	Windows,Prime95,v13,(aka WP1)
Factored		David Slowinski	AEB	0	Cray,Slowinski,(aka D4)
Factored	2002-01-08	S57483	9E2F8A4244E72AEB	502853	Linux 32-bit,Prime95,v21,(aka WX2)
Factored	2010-06-20	Rob_Dee	9E2F8A4244E72AEB	194719	Windows,Prime95,v25.8,build 5

PRP

Status	Proof	Date	User	Residue	Shift	Type	Base
Factored	Certified Good Power=6	2025-09-01	Kriesel	AC0395138C0119F0	0	1	3

PRP Cofactor

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	Certified Good	2025-01-27	NStorm	AC0395138C0119F0	1	829090	5	3

History

Date	User	Type	Result
2025-09-01	mikej	CERT	Proof certified good
2025-09-01	Kriesel	C-PRP	AC0395138C0119F0 Proof Certified Good Proof Power: 6
2025-01-27	Onorato_Lasarte	CERT	Proof certified good
2025-01-27	NStorm	C-PRP	M1012369/67883211890891016047061247 : AC0395138C0119F0 Proof Certified Good Proof Power: 6
2025-01-27	NStorm	F-ECM	Factor: 67883211890891016047061247 / ECM curve 44, B1=250000, B2=367552185, Edwards Sigma=6046328526126657
2022-06-05	axn	NF-PM1	B1=32000000, B2=756203658210
2022-01-30	Numberwang	NF-PM1	B1=106000, B2=2525853330
2018-11-19	Joss	NF-PM1	B1=5020000, B2=203486169
2018-10-21	Joss	NF-PM1	B1=5020000, B2=202473800, E=12
2018-04-29	Joss	NF-PM1	B1=5020000, B2=101236900, E=12
2018-02-23	Joss	NF-PM1	B1=5020000, B2=89760000, E=12
2018-02-23	Joss	NF-PM1	B1=5020000, B2=44880000, E=12
2016-09-30	Joss	NF-PM1	B1=5000000, B2=44880000, E=6
2016-08-28	Joss	NF-PM1	B1=5000000, B2=40800000, E=12
2016-08-10	Joss	NF-PM1	B1=5000000, B2=20400000, E=12
2016-07-09	Joss	NF-PM1	B1=5000000, B2=10200000, E=6
2016-02-23	Mark Rose	NF	no factor TF: 58-60
2014-04-01	Never Odd Or Even	NF	no factor TF: 70-71
2013-05-24	Never Odd Or Even	NF	no factor TF: 69-70
2013-05-24	Never Odd Or Even	NF	no factor TF: 68-69
2013-03-22	Never Odd Or Even	NF	no factor TF: 67-68
2013-03-22	Never Odd Or Even	NF	no factor TF: 66-67
2013-03-22	Never Odd Or Even	NF	no factor TF: 65-66
2013-03-22	Never Odd Or Even	NF	no factor TF: 64-65
2010-12-13	Rob_Dee	NF-PM1	B1=5000000, B2=5100000
2010-12-12	Rob_Dee	NF-PM1	B1=4800000, B2=5000000
2010-12-11	Rob_Dee	NF-PM1	B1=4600000, B2=4800000
2010-12-10	Rob_Dee	NF-PM1	B1=4400000, B2=4600000
2010-12-09	Rob_Dee	NF-PM1	B1=4200000, B2=4400000
2010-12-08	Rob_Dee	NF-PM1	B1=4000000, B2=4200000
2010-12-07	Rob_Dee	NF-PM1	B1=3800000, B2=4000000
2010-12-06	Rob_Dee	NF-PM1	B1=3600000, B2=3800000
2010-12-05	Rob_Dee	NF-PM1	B1=3400000, B2=3600000
2010-12-04	Rob_Dee	NF-PM1	B1=3200000, B2=3400000
2010-12-03	Rob_Dee	NF-PM1	B1=3000000, B2=3200000
2010-12-02	Rob_Dee	NF-PM1	B1=2800000, B2=3000000
2010-12-01	Rob_Dee	NF-PM1	B1=2600000, B2=2800000
2010-11-30	Rob_Dee	NF-PM1	B1=2400000, B2=2600000
2010-11-29	Rob_Dee	NF-PM1	B1=2200000, B2=2400000
2010-11-28	Rob_Dee	NF-PM1	B1=2000000, B2=2200000
2010-11-27	Rob_Dee	NF-PM1	B1=1800000, B2=2000000
2010-11-26	Rob_Dee	NF-PM1	B1=1600000, B2=1800000
2010-11-25	Rob_Dee	NF-PM1	B1=1400000, B2=1600000
2010-11-24	Rob_Dee	NF-PM1	B1=1200000, B2=1400000
2010-11-23	Rob_Dee	NF-PM1	B1=1000000, B2=1200000
2010-11-22	Rob_Dee	NF-PM1	B1=800000, B2=1000000
2010-11-21	Rob_Dee	NF-PM1	B1=600000, B2=800000
2010-11-20	Rob_Dee	NF-PM1	B1=400000, B2=600000
2010-11-09	Michael C	NF	no factor TF: 63-64
2010-11-09	Michael C	NF	no factor TF: 62-63
2010-11-09	Michael C	NF	no factor TF: 61-62
2010-06-20	Rob_Dee	C-LL	9E2F8A4244E72AEB
2009-02-19	Sturle Sunde	NF	no factor TF: 60-61
2003-12-13	-anonymous-	NF-PM1	B1=15000, B2=198750
2003-11-16	eteo	NF-PM1	B1=200000, B2=2000000, E=6
2003-11-16	-anonymous-	NF-PM1	B1=2048, B2=204800
2003-11-08	-anonymous-	NF-PM1	B1=15000, B2=198750
2003-01-09	-anonymous-	NF	no factor TF: 1-58
2002-10-07	Joss	NF-PM1	B1=32768
2002-09-22	Joss	NF-PM1	B1=27000
2002-09-14	Joss	NF-PM1	B1=26000, B2=26000
2002-08-17	Joss	NF-PM1	B1=13000, B2=13000
2002-08-17	Joss	NF-PM1	B1=12000, B2=12000
2002-08-17	Joss	NF-PM1	B1=14000, B2=14000
2002-08-17	Joss	NF-PM1	B1=15000, B2=15000
2002-08-17	Joss	NF-PM1	B1=11000, B2=11000
2002-01-08	-anonymous-	C-LL	9E2F8A4244E72AEB
2001-10-13	-anonymous-	NF	no factor TF: 1-57
2001-09-30	-anonymous-	NF-PM1	B1=10000, B2=127500

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