2 710 723 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	10050107760

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	75 / 640

Estimated T-Level: 25.6 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-01-16	Steve Rogreson	B8EB503B768CEFD9	0
Verified	1999-05-30	Bryan Fullerton	B8EB503B768CEFD9	871022
Verified	2018-08-02	kkmrkkblmbrbk	B8EB503B768CEFD9	178513

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-09-28	Marcin Nintyfive	E3B794C4E4062652	961152	1	3

History

Date	User	Type	Result
2025-05-02	Joss	NF-PM1	B1=10000000, B2=10050107760
2023-03-09	Architects Cubed	NF-PM1	B1=5000000, B2=8367545550
2022-12-13	Joss	NF-PM1	B1=1000000, B2=450000000
2022-12-11	Joss	NF-PM1	B1=1000000, B2=449428980
2022-11-18	Architects Cubed	NF	no factor from 2^69 to 2^70
2021-11-04	Aaron Haviland	NF-PM1	B1=2000000, B2=40800000, e=12
2021-09-28	Ben Delo	CERT	PRP Certification CERT proof power = 7 Proof certified good
2021-09-28	Marcin Nintyfive	C-PRP	E3B794C4E4062652 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-07	TJAOI	NF	no factor from 2^68 to 2^69
2019-02-11	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-20	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2018-08-02	kkmrkkblmbrbk	C-LL	B8EB503B768CEFD9
2017-09-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-25	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-04-04	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-18	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-26	Sturle Sunde	NF	no factor from 2^60 to 2^61

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