1 730 299 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

1730299

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

No factors below 2⁶⁸

TF target 2⁶¹

TF below 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	17000000
B2 =	272007836100

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Ed Knapton	4FD3D2A80631895E	0
Verified	1998-12-06	Ethan O'Connor	4FD3D2A80631895E	1082381
Verified	2015-06-27	MadPoo	4FD3D2A80631895E	700257

PRP

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-02	Kriesel	55D6D89A5DAAFA39	0	1	3

History

Date	User	Type	Result
2025-09-03	Theo Polidano	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	55D6D89A5DAAFA39 PRP proof power = 6 PRP: Verified Proof certified good
2023-07-02	Joss	NF-PM1	B1=1730299, B2=6913991700
2023-06-29	linament	NF-PM1	B1=17000000, B2=272007836100
2023-03-04	Joss	NF-PM1	B1=1730299, B2=2999881500
2023-01-04	Joss	NF-PM1	B1=1730299, B2=1042851810
2022-07-31	masser	NF-PP1	Start=113/23, B1=1700000, B2=61200000
2019-08-16	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-17	Joss	NF-PM1	B1=1730299, B2=190332890, E=12
2018-10-11	Joss	NF-PM1	B1=1730299, B2=173029900, E=12
2018-10-03	Joss	NF-PM1	B1=1730299, B2=17302990, E=12
2018-06-04	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-09-13	mikr	NF-PM1	B1=3642200, B2=123456789, E=12
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-31	Joss	NF-PM1	B1=1604677
2015-07-21	Joss	NF-PM1	B1=1458798
2015-07-13	Joss	NF-PM1	B1=1326180
2015-07-07	Joss	NF-PM1	B1=1205619
2015-06-27	MadPoo	C-LL	4FD3D2A80631895E
2015-06-25	Joss	NF-PM1	B1=1096018
2015-06-08	Joss	NF-PM1	B1=996380
2015-05-22	Joss	NF-PM1	B1=905800
2015-05-04	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-04	snme2pm1	NF	no factor from 2^63 to 2^64
2015-05-01	Joss	NF-PM1	B1=823455
2015-04-08	Joss	NF-PM1	B1=680542
2015-03-29	Joss	NF-PM1	B1=618675
2015-02-06	Joss	NF-PM1	B1=562432
2015-01-29	Joss	NF-PM1	B1=281216
2014-12-02	Joss	NF-PM1	B1=211282
2014-09-10	Joss	NF-PM1	B1=174188
2014-05-04	Joss	NF-PM1	B1=137094
2014-04-04	Joss	NF-PM1	B1=100000
2011-02-11	Carsten Kossendey	NF-PM1	B1=90000, B2=1530000, E=6
2010-11-18	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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