It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 168 is not a prime number.
For example, 165 168 can be divided by 2: 165 168 / 2 = 82 584.
For 165 168 to be a prime number, it would have been required that 165 168 has only two divisors, i.e., itself and 1.
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165 168 is an even number, because it is evenly divisible by 2: 165 168 / 2 = 82 584.
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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 165 168 is about 406.409.
Thus, the square root of 165 168 is not an integer, and therefore 165 168 is not a square number.
The square of a number (here 165 168) is the result of the product of this number (165 168) by itself (i.e., 165 168 × 165 168); the square of 165 168 is sometimes called "raising 165 168 to the power 2", or "165 168 squared".
The square of 165 168 is 27 280 468 224 because 165 168 × 165 168 = 165 1682 = 27 280 468 224.
As a consequence, 165 168 is the square root of 27 280 468 224.
The multiples of 165 168 are all integers evenly divisible by 165 168, that is all numbers such that the remainder of the division by 165 168 is zero. There are infinitely many multiples of 165 168. The smallest multiples of 165 168 are: