It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 308 is not a prime number.
For example, 165 308 can be divided by 2: 165 308 / 2 = 82 654.
For 165 308 to be a prime number, it would have been required that 165 308 has only two divisors, i.e., itself and 1.
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165 308 is an even number, because it is evenly divisible by 2: 165 308 / 2 = 82 654.
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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 165 308 is about 406.581.
Thus, the square root of 165 308 is not an integer, and therefore 165 308 is not a square number.
The square of a number (here 165 308) is the result of the product of this number (165 308) by itself (i.e., 165 308 × 165 308); the square of 165 308 is sometimes called "raising 165 308 to the power 2", or "165 308 squared".
The square of 165 308 is 27 326 734 864 because 165 308 × 165 308 = 165 3082 = 27 326 734 864.
As a consequence, 165 308 is the square root of 27 326 734 864.
The multiples of 165 308 are all integers evenly divisible by 165 308, that is all numbers such that the remainder of the division by 165 308 is zero. There are infinitely many multiples of 165 308. The smallest multiples of 165 308 are: