It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 133 508 is not a prime number.
For example, 133 508 can be divided by 2: 133 508 / 2 = 66 754.
For 133 508 to be a prime number, it would have been required that 133 508 has only two divisors, i.e., itself and 1.
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133 508 is an even number, because it is evenly divisible by 2: 133 508 / 2 = 66 754.
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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 133 508 is about 365.387.
Thus, the square root of 133 508 is not an integer, and therefore 133 508 is not a square number.
The square of a number (here 133 508) is the result of the product of this number (133 508) by itself (i.e., 133 508 × 133 508); the square of 133 508 is sometimes called "raising 133 508 to the power 2", or "133 508 squared".
The square of 133 508 is 17 824 386 064 because 133 508 × 133 508 = 133 5082 = 17 824 386 064.
As a consequence, 133 508 is the square root of 17 824 386 064.
The multiples of 133 508 are all integers evenly divisible by 133 508, that is all numbers such that the remainder of the division by 133 508 is zero. There are infinitely many multiples of 133 508. The smallest multiples of 133 508 are: