2 270 141 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
1952544660806881049263	22	70.7	2011-01-02 20:35:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	254 / 640

Estimated T-Level: 27.0 ⓘ

TF below 2^85 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Bruce Valk	4E8737D2AE888E51	0	Windows,Prime95,v13,NT service,(aka WP5)
Factored	1999-03-15	Alan Lund	4E8737D2AE888E51	97526	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-11	Oliver Kruse	C00102587CBB1D3E	1	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	C00102587CBB1D3E	1	1883976	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2270141/1952544660806881049263 : C00102587CBB1D3E
2017-10-11	Oliver Kruse	C-PRP	M2270141/1952544660806881049263 : C00102587CBB1D3E
2016-04-27	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-01-02	markr	F-PM1	Factor: 1952544660806881049263
2010-11-12	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-14	Sturle Sunde	NF	no factor TF: 60-61
2003-04-27	-anonymous-	NF-PM1	B1=2048, B2=204800, E=12
1999-03-15	-anonymous-	C-LL	4E8737D2AE888E51