2 769 553 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^75 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	52621508
B2 =	1284463520340

ECM

Digits	B1	Curves
25	50000	223 / 280

Estimated T-Level: 24.0 ⓘ

Status	Date	User	Residue	Shift
Verified		Ari Orn	41722BCC3530C01F	0
Verified	1999-08-22	Gerrit Hurenkamp	41722BCC3530C01F	2397451
Verified	2018-08-21	kkmrkkblmbrbk	41722BCC3530C01F	2119941

History

Date	User	Type	Result
2024-12-02	yuriy_5-1	NF-PM1	B1=52621508, B2=1284463520340
2023-08-25	TJAOI	NF	no factor from 2^69 to 2^70
2023-02-21	Architects Cubed	NF-PM1	B1=5000000, B2=8681331750
2021-05-31	TJAOI	NF	no factor from 2^68 to 2^69
2019-02-23	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-21	kkmrkkblmbrbk	C-LL	41722BCC3530C01F
2017-10-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-02-25	Joss	NF-PM1	B1=294451, B2=2944510, E=6
2017-02-15	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2016-12-23	Joss	NF-PM1	B1=204480
2016-10-26	Joss	NF-PM1	B1=170400
2016-08-13	Joss	NF-PM1	B1=142000, B2=4730000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-09	markr	NF	no factor from 2^61 to 2^62
2010-11-30	markr	NF-PM1	B1=110000, B2=2365000, E=6
2010-11-10	Joss	NF-PM1	B1=15000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61

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