1 707 413 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

1707413

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

No factors below 2⁶⁸

TF target 2⁶¹

TF below 2^82 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	17000000
B2 =	283526923680

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	140 / 640

Estimated T-Level: 26.1 ⓘ

Status	Date	User	Residue	Shift
Verified		Bruce Appleby	C7D72465F9F3AFEB	0
Verified	1998-11-28	Louis Towles	C7D72465F9F3AFEB	348676
Verified	2015-06-29	MadPoo	C7D72465F9F3AFEB	71952

PRP

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-02	Kriesel	9E79D5097FE5AC7E	0	1	3

History

Date	User	Type	Result
2025-09-03	Carlos Pinho	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	9E79D5097FE5AC7E PRP proof power = 6 PRP: Verified Proof certified good
2023-06-20	linament	NF-PM1	B1=17000000, B2=283526923680
2023-06-20	linament	NF-PM1	B1=17000000
2023-03-14	Joss	NF-PM1	B1=1707413, B2=3510198510
2022-12-19	Joss	NF-PM1	B1=1707413, B2=1252093920
2021-05-05	Carlos Pinho	NF-PP1	Start=2/7, B1=1000000, B2=51000000
2019-07-17	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-16	Joss	NF-PM1	B1=1707413, B2=187815430, E=12
2018-06-15	Joss	NF-PM1	B1=1707413, B2=170741300, E=12
2018-06-15	Joss	NF-PM1	B1=1707413, B2=123456789, E=12
2018-06-11	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-08-31	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-24	mikr	NF-PM1	B1=3642200, B2=123456789, E=12
2015-07-21	Joss	NF-PM1	B1=1564459
2015-07-13	Joss	NF-PM1	B1=1422236
2015-07-07	Joss	NF-PM1	B1=1292942
2015-06-29	MadPoo	C-LL	C7D72465F9F3AFEB
2015-06-25	Joss	NF-PM1	B1=1175402
2015-06-08	Joss	NF-PM1	B1=1068548
2015-05-26	Joss	NF-PM1	B1=971408
2015-05-22	Joss	NF-PM1	B1=883099
2015-05-07	Joss	NF-PM1	B1=802818
2015-05-01	Joss	NF-PM1	B1=729835
2015-04-28	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-28	snme2pm1	NF	no factor from 2^63 to 2^64
2015-04-08	Joss	NF-PM1	B1=603170
2015-03-14	Joss	NF-PM1	B1=498489
2015-03-05	Joss	NF-PM1	B1=453172
2015-02-23	Joss	NF-PM1	B1=411975
2015-02-13	Joss	NF-PM1	B1=374523
2015-01-07	Joss	NF-PM1	B1=281386
2014-10-05	Joss	NF-PM1	B1=187591
2014-04-28	-Anonymous-	NF-PM1	B1=150000
2014-03-31	Joss	NF-PM1	B1=100000
2011-02-11	Carsten Kossendey	NF-PM1	B1=90000, B2=1507500, E=6
2011-01-29	Joss	NF-PM1	B1=50000
2010-10-16	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-22	Architects Cubed	NF	no factor from 2^60 to 2^61

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