Large Digit Calculator

Primeinator · 2006-02-15, 01:36

Can someone recommend a program that will run on Windows XP that can multiply and find the exact decimal digits of numbers the size of the recent Mersenne primes? I've done some looking on Google but haven't found anything yet.

-Thanks.

Citrix · 2006-02-15, 03:18

There is no such program in the market. You will have to write one for your self. You should use the GMP library or look into the code of prime95.

Citrix

casevh · 2006-02-15, 06:20

If you are willing to use the Python programming language, I wrote a libary called DecInt specifically designed to calculate very large numbers in exact decimal format. It will use GMP if GMPY (GMP for Python) is available.

For Python, go to www.python.org

For DecInt and GMPY, go to home.comcast.net/~casevh

For psyco (a Just In Time compiler), go to http://sourceforge.net/project/showf...group_id=41036

Using an AMD Athlon MP2800+, I'm able to calculate M43 in under 7 seconds.

victor · 2006-02-15, 22:41

Mprint : http://www.apfloat.org/apfloat/ :)

Primeinator · 2006-02-16, 05:19

Quote:

Mprint : http://www.apfloat.org/apfloat/ :)

Merci beaucoup!

This is exactly what I was looking for. My only complaint (and this is being too picky) is that I can't set the size of the window to copy paste a result in a desirable format.

victor · 2006-02-16, 12:18

Quote:

Originally Posted by Primeinator

Merci beaucoup!

This is exactly what I was looking for. My only complaint (and this is being too picky) is that I can't set the size of the window to copy paste a result in a desirable format.

De rien :)

To output the result in a text/plain file, type
mprint exponent > file.txt

Primeinator · 2006-02-16, 23:08

Into the command line? Do I just put that around the result I am figuring?

ixfd64 · 2006-02-16, 23:11

Suppose you wanted to print out M607 in m607.txt.

You would type "mprint 607 > m607.txt".

2006-02-15, 01:36	#1
Primeinator "Kyle" Feb 2005 Somewhere near M52.. 3·5·61 Posts	Large Digit Calculator Can someone recommend a program that will run on Windows XP that can multiply and find the exact decimal digits of numbers the size of the recent Mersenne primes? I've done some looking on Google but haven't found anything yet. -Thanks.

2006-02-15, 03:18	#2
Citrix Jun 2003 1,579 Posts	There is no such program in the market. You will have to write one for your self. You should use the GMP library or look into the code of prime95. Citrix Last fiddled with by Citrix on 2006-02-15 at 03:20

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2006-02-15, 06:20	#3
casevh Dec 2005 23 Posts	If you are willing to use the Python programming language, I wrote a libary called DecInt specifically designed to calculate very large numbers in exact decimal format. It will use GMP if GMPY (GMP for Python) is available. For Python, go to www.python.org For DecInt and GMPY, go to home.comcast.net/~casevh For psyco (a Just In Time compiler), go to http://sourceforge.net/project/showf...group_id=41036 Using an AMD Athlon MP2800+, I'm able to calculate M43 in under 7 seconds.

2006-02-15, 22:41	#4
victor Oct 2005 Fribourg, Switzerlan 2²·3²·7 Posts	Mprint : http://www.apfloat.org/apfloat/ :)

2006-02-16, 23:08	#7
Primeinator "Kyle" Feb 2005 Somewhere near M52.. 3·5·61 Posts	Into the command line? Do I just put that around the result I am figuring?

2006-02-16, 23:11	#8
ixfd64 Bemusing Prompter "Danny" Dec 2002 California 2³×3³×11 Posts	Suppose you wanted to print out M607 in m607.txt. You would type "mprint 607 > m607.txt".