(n)
return True
Return True if n is a prime number
    Else return False.
Return True if n is a prime number
    Else return False.
Return True if n is a prime number Else return False .
def prime_check(n):
    """Return True if n is a prime number
    Else return False.
    """

    if n <= 1:
        return False
    if n == 2 or n == 3:
        return True
    if n % 2 == 0 or n % 3 == 0:
        return False
    j = 5
    while j * j <= n:
        if n % j == 0 or n % (j + 2) == 0:
            return False
        j += 6
    return True
def prime_check ( n ) : if n <= 1 : return False if n == 2 or n == 3 : return True if n % 2 == 0 or n % 3 == 0 : return False j = 5 while j * j <= n : if n % j == 0 or n % ( j + 2 ) == 0 : return False j += 6 return True