It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 109 108 is not a prime number.
For example, 109 108 can be divided by 2: 109 108 / 2 = 54 554.
For 109 108 to be a prime number, it would have been required that 109 108 has only two divisors, i.e., itself and 1.
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109 108 is an even number, because it is evenly divisible by 2: 109 108 / 2 = 54 554.
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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 109 108 is about 330.315.
Thus, the square root of 109 108 is not an integer, and therefore 109 108 is not a square number.
The square of a number (here 109 108) is the result of the product of this number (109 108) by itself (i.e., 109 108 × 109 108); the square of 109 108 is sometimes called "raising 109 108 to the power 2", or "109 108 squared".
The square of 109 108 is 11 904 555 664 because 109 108 × 109 108 = 109 1082 = 11 904 555 664.
As a consequence, 109 108 is the square root of 11 904 555 664.
The multiples of 109 108 are all integers evenly divisible by 109 108, that is all numbers such that the remainder of the division by 109 108 is zero. There are infinitely many multiples of 109 108. The smallest multiples of 109 108 are: