2 272 631 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 2⁶²

Factored

Factor	Digits	Bits	Date
125101600911338285903	21	66.8	2010-01-02 14:18:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	153 / 640

Estimated T-Level: 26.2 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Wayne Scott	CD4ECB6181E64BC3	0	Linux 32-bit,Prime95,v13,(aka WP2)
Bad	1999-03-01	Jeff Cambron	EE32741F9DF6024D	1969801	Windows,Prime95,v17,(aka WT1)
Factored	1999-07-27	Stephen Wood	CD4ECB6181E64BC3	1948619	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)	2017-10-11	Oliver Kruse	AE93299848B1D730	1	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	AE93299848B1D730	1	1449595	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2272631/125101600911338285903 : AE93299848B1D730
2017-10-11	Oliver Kruse	C-PRP	M2272631/125101600911338285903 : AE93299848B1D730
2016-04-29	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2010-01-02	KAMCOBILL	F-ECM	Factor: 125101600911338285903
2009-01-10	Sturle Sunde	NF	no factor TF: 60-61
2003-04-27	-anonymous-	NF-PM1	B1=2048, B2=204800, E=12
1999-10-15	-anonymous-	C-LL	EE32741F9DF6024D
1999-07-27	Stephen Wood	C-LL	CD4ECB6181E64BC3
1999-03-01	-anonymous-	C-LL	EE32741F9DF6024D