Prime Number Calculator

1) Relation to multiples of 6: Every prime number greater than 3 is always one less or one more than a multiple of 6.
Example: `10321` is 1 more than `10320` (multiple of 6).

2) Square minus 1 divisible by 24: For every prime number greater than 3, if 1 is subtracted from its square, the result is always divisible by 24.
Example: The square of `10321` is `106523041`. Subtracting 1, we get `106523040`. Note that `106523040 ÷ 24 = 4438460`.

3) Difference of squares: Every prime number greater than 2 can be expressed as the difference of the squares of two consecutive natural numbers.
Example: `10321 = 5161^2 - 5160^2 = 26635921 - 26625600`

4) Sum of two squares: Every prime number of the form `4n+1` (where n is a positive natural number) can be expressed as the sum of two squares.
Example: `10321 = 36^2 + 95^2 = 1296 + 9025`, where `10321 = 4 × 2580 + 1`.

5) Form `4n+1` or `4n-1`: Except for the number 2, all prime numbers follow the pattern `4n+1` or `4n-1`, where `n` is a natural number.
Example: `10321` is of the form `4n+1`, where `n = 2580`.