Online Prime number calculator

Calculator online checks is the specified number is Prime or not.
A Prime number is a natural positive integer which has only two distinct natural divisors — one and itself, in other words, the number (x) is simple if it is greater than (1) but it is divisible only by (1) and (x), numbers which are not simple is called composite.

Indicate the number:

Is this number a prime:

Smaller nearest prime:

Larger nearest prime: