2 507 927 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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
23296227709541634833	20	64.3	2015-02-18 11:36:53

ECM

Digits	B1	Curves
25	50000	149 / 280

Estimated T-Level: 22.7 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Stephan Grupp	D7097400EF6421B8	0	Windows,Prime95,v14,(aka WQ1)
Bad	1999-03-26	Murray Henderson	ECDEF9E612C50429	2105452	Linux 32-bit,Prime95,v17,(aka WT2)
Factored	1999-05-23	Bill Krause	D7097400EF6421B8	365544	Linux 32-bit,Prime95,v18,(aka WU2)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	3651E315B8498D7D	1	487164	5	3
Verified	PRP without proof (not generated)	2017-11-30	storm5510	3651E315B8498D7D	1	657821	5	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=290589390
2022-03-10	LordJulius	NF	no factor TF: 1-60
2017-11-30	storm5510	C-PRP	M2507927/23296227709541634833 : 3651E315B8498D7D
2017-10-14	Oliver Kruse	C-PRP	M2507927/23296227709541634833 : 3651E315B8498D7D
2015-02-18	VictordeHollander	F	Factor: 23296227709541634833 / TF: 64-65
2015-02-18	VictordeHollander	NF	no factor TF: 63-64
2013-12-04	Jerry Hallett	NF	no factor TF: 62-63
2012-06-12	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-10-03	markr	NF-PM1	B1=165000, B2=3918750, E=6
2011-01-04	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-02-06	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	Team Prime Rib	NF-PM1	B1=15000, B2=236250
2003-10-23	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-05-23	-anonymous-	C-LL	D7097400EF6421B8
1999-03-26	Murray Henderson	C-LL	ECDEF9E612C50429
1999-03-15	Murray Henderson	NF	no factor TF: 1-59