It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 168 144 is not a prime number.
For example, 168 144 can be divided by 2: 168 144 / 2 = 84 072.
For 168 144 to be a prime number, it would have been required that 168 144 has only two divisors, i.e., itself and 1.
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168 144 is an even number, because it is evenly divisible by 2: 168 144 / 2 = 84 072.
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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 168 144 is about 410.054.
Thus, the square root of 168 144 is not an integer, and therefore 168 144 is not a square number.
The square of a number (here 168 144) is the result of the product of this number (168 144) by itself (i.e., 168 144 × 168 144); the square of 168 144 is sometimes called "raising 168 144 to the power 2", or "168 144 squared".
The square of 168 144 is 28 272 404 736 because 168 144 × 168 144 = 168 1442 = 28 272 404 736.
As a consequence, 168 144 is the square root of 28 272 404 736.
The multiples of 168 144 are all integers evenly divisible by 168 144, that is all numbers such that the remainder of the division by 168 144 is zero. There are infinitely many multiples of 168 144. The smallest multiples of 168 144 are: