R and Python Functions For Detecting Prime Numbers

R function:

is_prime <- function(x) {
  !any(x %% 2:(x-1) == 0L)
}

Examples:

is_prime(7)

## [1] TRUE

is_prime(934213)

## [1] FALSE

is_prime(934213)

## [1] FALSE

is_prime(999983)

## [1] TRUE

Python function:

import numpy as np
def is_prime_python(x):
    return not any(x % np.arange(2,x-1) == 0)

Examples:

is_prime_python(7)

## True

is_prime_python(934213)

## False

is_prime_python(934213)

## False

is_prime_python(999983)

## True