It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 638 is not a prime number.
For example, 118 638 can be divided by 2: 118 638 / 2 = 59 319.
For 118 638 to be a prime number, it would have been required that 118 638 has only two divisors, i.e., itself and 1.
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118 638 is an even number, because it is evenly divisible by 2: 118 638 / 2 = 59 319.
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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 118 638 is about 344.439.
Thus, the square root of 118 638 is not an integer, and therefore 118 638 is not a square number.
The square of a number (here 118 638) is the result of the product of this number (118 638) by itself (i.e., 118 638 × 118 638); the square of 118 638 is sometimes called "raising 118 638 to the power 2", or "118 638 squared".
The square of 118 638 is 14 074 975 044 because 118 638 × 118 638 = 118 6382 = 14 074 975 044.
As a consequence, 118 638 is the square root of 14 074 975 044.
The multiples of 118 638 are all integers evenly divisible by 118 638, that is all numbers such that the remainder of the division by 118 638 is zero. There are infinitely many multiples of 118 638. The smallest multiples of 118 638 are: