It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 311 is not a prime number.
For example, 118 311 can be divided by 3: 118 311 / 3 = 39 437.
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For 118 311 to be a prime number, it would have been required that 118 311 has only two divisors, i.e., itself and 1.
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118 311 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 118 311 is about 343.964.
Thus, the square root of 118 311 is not an integer, and therefore 118 311 is not a square number.
The square of a number (here 118 311) is the result of the product of this number (118 311) by itself (i.e., 118 311 × 118 311); the square of 118 311 is sometimes called "raising 118 311 to the power 2", or "118 311 squared".
The square of 118 311 is 13 997 492 721 because 118 311 × 118 311 = 118 3112 = 13 997 492 721.
As a consequence, 118 311 is the square root of 13 997 492 721.
The multiples of 118 311 are all integers evenly divisible by 118 311, that is all numbers such that the remainder of the division by 118 311 is zero. There are infinitely many multiples of 118 311. The smallest multiples of 118 311 are: