Landon Noll looking up Fremont Peak Observatory 0.8m telescope Leonid 2001 meteor squall count at Fremont Peak
custom search of Landon Noll's web sites

Calc - C-style arbitrary precision calculator

[chongo's home] [Astronomy] [Mathematics] [Prime Numbers] [Programming] [Technology] [contacting Landon]

Useful calc links:

If are interested in algorithms for finding very large primes:

Some of the methods used by the Amdahl 6 to discover (what was at the time of discovery, the largest known non-Mersenne prime): (391581*2^216193-1) are contained in the calc script This calc script is available as part of the calc distribution.

The tutorial on how to find a new largest known prime goes into detail about the above mentioned Amdahl 6 method.

If are interested the product of curious primes:

See the curious calc web page.

Calc is free

The calc program is free. It is distributed under the GNU Lesser General Public License.

Calc is open software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation version 2.1 of the License.

Many people have expressed their thanks the many people who wrote calc, tested calc, contributed code to calc, patched calc, and helped to improve it since it started back in 1984.

We, the authors of calc wrote calc because they wanted to write it, because it was fun writing it, and because we wanted you to use and enjoy it.

If you use and enjoy calc, and you want to show your appreciation for calc, you might consider doing some of the following:

© 1994-2022 Landon Curt Noll
chongo (was here) /\oo/\
$Revision: 8.1 $ $Date: 2022/07/07 22:55:49 $