It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 118 is not a prime number.
For example, 165 118 can be divided by 2: 165 118 / 2 = 82 559.
For 165 118 to be a prime number, it would have been required that 165 118 has only two divisors, i.e., itself and 1.
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165 118 is an even number, because it is evenly divisible by 2: 165 118 / 2 = 82 559.
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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 165 118 is about 406.347.
Thus, the square root of 165 118 is not an integer, and therefore 165 118 is not a square number.
The square of a number (here 165 118) is the result of the product of this number (165 118) by itself (i.e., 165 118 × 165 118); the square of 165 118 is sometimes called "raising 165 118 to the power 2", or "165 118 squared".
The square of 165 118 is 27 263 953 924 because 165 118 × 165 118 = 165 1182 = 27 263 953 924.
As a consequence, 165 118 is the square root of 27 263 953 924.
The multiples of 165 118 are all integers evenly divisible by 165 118, that is all numbers such that the remainder of the division by 165 118 is zero. There are infinitely many multiples of 165 118. The smallest multiples of 165 118 are: