2 588 753 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
25365396487879471541137460826049	32	104.3	2016-08-12 01:52:16

P-1 factors

Date	Factors	B1	B2
2016-08-12	25365396487879471541137460826049	3200000	112000000

ECM

Digits	B1	Curves
25	50000	122 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Thomas Honold	D44424DAE0FD7423	0	Linux 32-bit,Prime95,v14,(aka WQ2)
Factored	1999-03-26	Alan Frederick	D44424DAE0FD7423	1233393	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-15	Oliver Kruse	811A8450A24CF7C0	1	382109	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	811A8450A24CF7C0	1	254221	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2588753/25365396487879471541137460826049 : 811A8450A24CF7C0
2017-10-15	Oliver Kruse	C-PRP	M2588753/25365396487879471541137460826049 : 811A8450A24CF7C0
2016-08-12	mikr	F-PM1	Factor: 25365396487879471541137460826049 / B1=3200000, B2=112000000
2016-02-23	Mark Rose	NF	no factor TF: 59-60
2015-11-06	ramgeis	NF	no factor TF: 65-66
2015-02-27	VictordeHollander	NF	no factor TF: 64-65
2015-02-27	VictordeHollander	NF	no factor TF: 63-64
2013-01-14	dbaugh	NF	no factor TF: 62-63
2012-06-22	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-10-14	markr	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-13	Joss	NF-PM1	B1=50000
2010-11-15	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor TF: 60-61
2003-11-08	Team Prime Rib	NF-PM1	B1=15000, B2=206250
2003-10-31	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-04-13	-anonymous-	NF	no factor TF: 1-59
1999-04-13	-anonymous-	C-LL	D44424DAE0FD7423
1999-03-26	-anonymous-	C-LL	D44424DAE0FD7423
1999-03-26	-anonymous-	NF	no factor TF: 1-59

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