1 017 607 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with both PRP and Lucas-Lehmer tests

No factors below 2⁷¹

TF target 2⁶⁰

Assignments

Assigned	User	Work Type	Stage	% Done	Updated	Est Complete	Expired
2026-01-31	-anonymous-	ECM			2026-01-31	2026-02-27

P-1

B1 =	32000000
B2 =	756203658210

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	173 / 640

Estimated T-Level: 26.4 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Verified		Ken Kriesel	4B34D99988FA57EB	0	Windows,Prime95,v13,(aka WP1)
Verified		David Slowinski	17EB	0	Cray,Slowinski,(aka D5)
Verified	2002-01-15	S57483	4B34D99988FA57EB	817478	Linux 32-bit,Prime95,v21,(aka WX2)
Verified	2016-06-01	MadPoo 🙂	4B34D99988FA57EB	169811	Windows 64-bit,Prime95,v26,(aka We4)

PRP

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2020-10-31	Ethan O'Connor	22744F0CE7D0A311	0	1	3
Verified	Certified Good Power=6	2025-09-01	Kriesel	22744F0CE7D0A311	0	1	3

History

Date	User	Type	Result
2025-09-19	Joss	NF-PP1	Start=2/7, B1=1000000
2025-09-01	Aaron J. Soley	CERT	Proof certified good
2025-09-01	Kriesel	C-PRP	22744F0CE7D0A311 Proof Certified Good Proof Power: 6
2022-06-07	axn	NF-PM1	B1=32000000, B2=756203658210
2022-01-31	Numberwang	NF-PM1	B1=106000, B2=2525853330
2020-10-31	Ben Delo	CERT	Proof certified good
2020-10-31	Ethan O'Connor	C-PRP	22744F0CE7D0A311 Proof Certified Good Proof Power: 8
2018-11-19	Joss	NF-PM1	B1=5520000, B2=204539007
2018-10-21	Joss	NF-PM1	B1=5520000, B2=203521400, E=12
2018-03-15	Joss	NF-PM1	B1=5520000, B2=128840800, E=12
2018-02-16	Joss	NF-PM1	B1=5520000, B2=64420400, E=12
2018-02-16	Joss	NF-PM1	B1=5520000, B2=32210200, E=12
2016-10-13	Joss	NF-PM1	B1=5500000, B2=32210200, E=6
2016-07-17	Joss	NF-PM1	B1=5500000, B2=22000000, E=12
2016-06-18	Joss	NF-PM1	B1=5500000, B2=11000000, E=6
2016-06-01	MadPoo 🙂	C-LL	4B34D99988FA57EB
2016-05-15	Numberwang	NF-PM1	B1=10000, B2=250000
2016-02-23	Mark Rose	NF	no factor TF: 58-60
2015-12-04	Joss	NF-PM1	B1=5500000
2014-04-01	Never Odd Or Even	NF	no factor TF: 70-71
2013-07-02	Never Odd Or Even	NF	no factor TF: 69-70
2013-07-02	Never Odd Or Even	NF	no factor TF: 68-69
2013-03-29	Never Odd Or Even	NF	no factor TF: 67-68
2013-03-29	Never Odd Or Even	NF	no factor TF: 66-67
2013-03-29	Never Odd Or Even	NF	no factor TF: 65-66
2013-03-29	Never Odd Or Even	NF	no factor TF: 64-65
2010-11-14	Michael C	NF	no factor TF: 63-64
2010-11-14	Michael C	NF	no factor TF: 62-63
2010-11-14	Michael C	NF	no factor TF: 61-62
2010-03-14	Rob_Dee	NF-PM1	B1=5000000, B2=5100000
2010-03-13	Rob_Dee	NF-PM1	B1=4800000, B2=4900000
2010-03-12	Rob_Dee	NF-PM1	B1=4600000, B2=4700000
2010-03-11	Rob_Dee	NF-PM1	B1=4400000, B2=4500000
2010-03-10	Rob_Dee	NF-PM1	B1=4200000, B2=4300000
2010-03-09	Rob_Dee	NF-PM1	B1=4000000, B2=4100000
2010-03-08	Rob_Dee	NF-PM1	B1=3800000, B2=3900000
2010-03-07	Rob_Dee	NF-PM1	B1=3600000, B2=3700000
2010-03-06	Rob_Dee	NF-PM1	B1=3400000, B2=3500000
2010-03-05	Rob_Dee	NF-PM1	B1=3200000, B2=3300000
2010-03-04	Rob_Dee	NF-PM1	B1=3000000, B2=3100000
2010-03-03	Rob_Dee	NF-PM1	B1=2800000, B2=2900000
2010-03-02	Rob_Dee	NF-PM1	B1=2600000, B2=2700000
2010-03-01	Rob_Dee	NF-PM1	B1=2400000, B2=2500000
2010-02-28	Rob_Dee	NF-PM1	B1=2200000, B2=2300000
2010-02-27	Rob_Dee	NF-PM1	B1=2000000, B2=2100000
2010-02-26	Rob_Dee	NF-PM1	B1=1800000, B2=1900000
2010-02-25	Rob_Dee	NF-PM1	B1=1600000, B2=1700000
2010-02-24	Rob_Dee	NF-PM1	B1=1400000, B2=1500000
2010-02-23	Rob_Dee	NF-PM1	B1=1200000, B2=1300000
2010-02-22	Rob_Dee	NF-PM1	B1=1000000, B2=1100000
2010-02-21	Rob_Dee	NF-PM1	B1=800000, B2=900000
2010-02-20	Rob_Dee	NF-PM1	B1=600000, B2=700000
2010-02-19	Rob_Dee	NF-PM1	B1=400000, B2=500000
2010-02-18	Rob_Dee	NF-PM1	B1=200000
2009-02-15	Sturle Sunde	NF	no factor TF: 60-61
2003-12-13	-anonymous-	NF-PM1	B1=15000, B2=198750
2003-11-16	-anonymous-	NF-PM1	B1=2048, B2=204800
2003-11-08	-anonymous-	NF-PM1	B1=15000, B2=198750
2003-01-25	-anonymous-	NF	no factor TF: 1-58
2002-10-07	Joss	NF-PM1	B1=27000
2002-09-29	Joss	NF-PM1	B1=25000
2002-09-22	Joss	NF-PM1	B1=15000
2002-01-15	-anonymous-	C-LL	4B34D99988FA57EB
2001-10-20	-anonymous-	NF	no factor TF: 1-57
2001-09-30	-anonymous-	NF-PM1	B1=10000, B2=127500

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