1 184 483 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

No factors below 2⁶⁹

TF target 2⁶⁰

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

P-1

B1 =	15000000
B2 =	53177562900

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Steve Sommars	8DD4DE3ED0130830	0
Verified		Cornelius Caesar	8DD4DE3ED0130830	0
Verified		Ricardo Montiel	8DD4DE3ED0130830	0
Verified	2015-11-11	MadPoo	8DD4DE3ED0130830	423533

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-11-05	Ethan O'Connor	0FB7305DBB467821	278196	1	3
Verified	2025-09-01	Kriesel	0FB7305DBB467821	0	1	3

History

Date	User	Type	Result
2025-09-02	Tercariol, C. A. S.	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	0FB7305DBB467821 PRP proof power = 6 PRP: Verified Proof certified good
2023-10-02	mikr	NF-PM1	B1=15000000, B2=53177562900
2023-07-27	Joss	NF-PM1	B1=1184483, B2=26580243690
2022-11-14	Joss	NF-PM1	B1=1184483, B2=12482419950
2022-10-12	Numberwang	NF-PM1	B1=122000, B2=5455850400
2021-10-19	MadPoo	NF	no factor from 2^68 to 2^69
2020-11-06	ManuelJC	CERT	PRP Certification CERT proof power = 6 Proof certified good
2020-11-05	Ethan O'Connor	C-PRP	0FB7305DBB467821 PRP proof power = 6 PRP: Verified Proof certified good
2020-03-08	Gordon Spence	NF	no factor from 2^67 to 2^68
2018-10-12	Joss	NF-PM1	B1=1184483, B2=130293130, E=12
2018-09-06	Yxinity	NF	no factor from 2^66 to 2^67
2018-04-20	Joss	NF-PM1	B1=1184483, B2=118448300, E=12
2016-08-27	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-07-29	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-11	MadPoo	C-LL	8DD4DE3ED0130830
2015-10-01	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-06	lycorn	NF	no factor from 2^64 to 2^65
2015-01-03	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2013-09-30	David Campeau	NF-PM1	B1=1210000, B2=35090000, E=12
2012-11-24	dbaugh	NF	no factor from 2^62 to 2^63
2012-09-07	Axelsson	NF	no factor from 2^61 to 2^62
2009-04-14	Sturle Sunde	NF	no factor from 2^60 to 2^61

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