It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 162 308 is not a prime number.
For example, 162 308 can be divided by 2: 162 308 / 2 = 81 154.
For 162 308 to be a prime number, it would have been required that 162 308 has only two divisors, i.e., itself and 1.
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162 308 is an even number, because it is evenly divisible by 2: 162 308 / 2 = 81 154.
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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 162 308 is about 402.875.
Thus, the square root of 162 308 is not an integer, and therefore 162 308 is not a square number.
The square of a number (here 162 308) is the result of the product of this number (162 308) by itself (i.e., 162 308 × 162 308); the square of 162 308 is sometimes called "raising 162 308 to the power 2", or "162 308 squared".
The square of 162 308 is 26 343 886 864 because 162 308 × 162 308 = 162 3082 = 26 343 886 864.
As a consequence, 162 308 is the square root of 26 343 886 864.
The multiples of 162 308 are all integers evenly divisible by 162 308, that is all numbers such that the remainder of the division by 162 308 is zero. There are infinitely many multiples of 162 308. The smallest multiples of 162 308 are: