Prime numbers, binary, Fibonacci, and calculators.
Decimal to binary conversion.
AND, OR, XOR on integers.
Greatest common divisor of two integers.
Decimal to binary, octal, and hexadecimal.
Add two numbers quickly.
Generate Fibonacci sequences.
Test membership in the Fibonacci sequence.
Check whether a number is prime.
Random digits after the decimal (demo).
List primes up to a limit. Two is the only even prime.