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: `29921` is 1 less than `29922` (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 `29921` is `895266241`. Subtracting 1, we get `895266240`. Note that `895266240 ÷ 24 = 37302760`.

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: `29921 = 14961^2 - 14960^2 = 223831521 - 223801600`

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: `29921 = 55^2 + 164^2 = 3025 + 26896`, where `29921 = 4 × 7480 + 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: `29921` is of the form `4n+1`, where `n = 7480`.