It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 689 is not a prime number.
For example, 118 689 can be divided by 3: 118 689 / 3 = 39 563.
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For 118 689 to be a prime number, it would have been required that 118 689 has only two divisors, i.e., itself and 1.
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118 689 is an odd number, because it is not evenly divisible by 2.
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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 118 689 is about 344.513.
Thus, the square root of 118 689 is not an integer, and therefore 118 689 is not a square number.
The square of a number (here 118 689) is the result of the product of this number (118 689) by itself (i.e., 118 689 × 118 689); the square of 118 689 is sometimes called "raising 118 689 to the power 2", or "118 689 squared".
The square of 118 689 is 14 087 078 721 because 118 689 × 118 689 = 118 6892 = 14 087 078 721.
As a consequence, 118 689 is the square root of 14 087 078 721.
The multiples of 118 689 are all integers evenly divisible by 118 689, that is all numbers such that the remainder of the division by 118 689 is zero. There are infinitely many multiples of 118 689. The smallest multiples of 118 689 are: