It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 308 is not a prime number.
For example, 120 308 can be divided by 2: 120 308 / 2 = 60 154.
For 120 308 to be a prime number, it would have been required that 120 308 has only two divisors, i.e., itself and 1.
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120 308 is an even number, because it is evenly divisible by 2: 120 308 / 2 = 60 154.
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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 120 308 is about 346.854.
Thus, the square root of 120 308 is not an integer, and therefore 120 308 is not a square number.
The square of a number (here 120 308) is the result of the product of this number (120 308) by itself (i.e., 120 308 × 120 308); the square of 120 308 is sometimes called "raising 120 308 to the power 2", or "120 308 squared".
The square of 120 308 is 14 474 014 864 because 120 308 × 120 308 = 120 3082 = 14 474 014 864.
As a consequence, 120 308 is the square root of 14 474 014 864.
The multiples of 120 308 are all integers evenly divisible by 120 308, that is all numbers such that the remainder of the division by 120 308 is zero. There are infinitely many multiples of 120 308. The smallest multiples of 120 308 are: