It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 209 is not a prime number.
For example, 118 209 can be divided by 3: 118 209 / 3 = 39 403.
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For 118 209 to be a prime number, it would have been required that 118 209 has only two divisors, i.e., itself and 1.
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118 209 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 118 209 is about 343.815.
Thus, the square root of 118 209 is not an integer, and therefore 118 209 is not a square number.
The square of a number (here 118 209) is the result of the product of this number (118 209) by itself (i.e., 118 209 × 118 209); the square of 118 209 is sometimes called "raising 118 209 to the power 2", or "118 209 squared".
The square of 118 209 is 13 973 367 681 because 118 209 × 118 209 = 118 2092 = 13 973 367 681.
As a consequence, 118 209 is the square root of 13 973 367 681.
The multiples of 118 209 are all integers evenly divisible by 118 209, that is all numbers such that the remainder of the division by 118 209 is zero. There are infinitely many multiples of 118 209. The smallest multiples of 118 209 are: