Is 20449 a prime number?

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 20449 is composite.

AND 20013 and 222692?

The binary AND operation has two inputs and one output. The binary AND operation will always produce a 1 output if both of its inputs are 1 and will produce a 0 output (MORE)