**Big
MATH****
is a calculator which go well beyond the typical 12 or even 16 digits of general
purpose calculators. It can handle over 600 digits values in base 10 (2048
bits in binary). All of the math is integer math though, no factions. Special functions, useful for computer scientist and
cryptographer, like 'Mod', Power: y^x, logic operators and several bases (you
can even make your own). You can also do Modulo math to any number.**

Download The Big Math Calculator

Checkout this Easy, pencil & paper implemented, Cipher: E-Cipher Overview

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