It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 135 008 is not a prime number.
For example, 135 008 can be divided by 2: 135 008 / 2 = 67 504.
For 135 008 to be a prime number, it would have been required that 135 008 has only two divisors, i.e., itself and 1.
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135 008 is an even number, because it is evenly divisible by 2: 135 008 / 2 = 67 504.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 135 008 is about 367.434.
Thus, the square root of 135 008 is not an integer, and therefore 135 008 is not a square number.
The square of a number (here 135 008) is the result of the product of this number (135 008) by itself (i.e., 135 008 × 135 008); the square of 135 008 is sometimes called "raising 135 008 to the power 2", or "135 008 squared".
The square of 135 008 is 18 227 160 064 because 135 008 × 135 008 = 135 0082 = 18 227 160 064.
As a consequence, 135 008 is the square root of 18 227 160 064.
The multiples of 135 008 are all integers evenly divisible by 135 008, that is all numbers such that the remainder of the division by 135 008 is zero. There are infinitely many multiples of 135 008. The smallest multiples of 135 008 are: