It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 243 is not a prime number.
For example, 118 243 can be divided by 23: 118 243 / 23 = 5 141.
For 118 243 to be a prime number, it would have been required that 118 243 has only two divisors, i.e., itself and 1.
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118 243 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 118 243 is about 343.865.
Thus, the square root of 118 243 is not an integer, and therefore 118 243 is not a square number.
The square of a number (here 118 243) is the result of the product of this number (118 243) by itself (i.e., 118 243 × 118 243); the square of 118 243 is sometimes called "raising 118 243 to the power 2", or "118 243 squared".
The square of 118 243 is 13 981 407 049 because 118 243 × 118 243 = 118 2432 = 13 981 407 049.
As a consequence, 118 243 is the square root of 13 981 407 049.
The multiples of 118 243 are all integers evenly divisible by 118 243, that is all numbers such that the remainder of the division by 118 243 is zero. There are infinitely many multiples of 118 243. The smallest multiples of 118 243 are: