It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 918 118 is not a prime number.
For example, 918 118 can be divided by 2: 918 118 / 2 = 459 059.
For 918 118 to be a prime number, it would have been required that 918 118 has only two divisors, i.e., itself and 1.
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918 118 is an even number, because it is evenly divisible by 2: 918 118 / 2 = 459 059.
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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 918 118 is about 958.185.
Thus, the square root of 918 118 is not an integer, and therefore 918 118 is not a square number.
The square of a number (here 918 118) is the result of the product of this number (918 118) by itself (i.e., 918 118 × 918 118); the square of 918 118 is sometimes called "raising 918 118 to the power 2", or "918 118 squared".
The square of 918 118 is 842 940 661 924 because 918 118 × 918 118 = 918 1182 = 842 940 661 924.
As a consequence, 918 118 is the square root of 842 940 661 924.
The multiples of 918 118 are all integers evenly divisible by 918 118, that is all numbers such that the remainder of the division by 918 118 is zero. There are infinitely many multiples of 918 118. The smallest multiples of 918 118 are: