It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 144 243 is not a prime number.
For example, 144 243 can be divided by 3: 144 243 / 3 = 48 081.
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For 144 243 to be a prime number, it would have been required that 144 243 has only two divisors, i.e., itself and 1.
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144 243 is an odd number, because it is not evenly divisible by 2.
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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 144 243 is about 379.793.
Thus, the square root of 144 243 is not an integer, and therefore 144 243 is not a square number.
The square of a number (here 144 243) is the result of the product of this number (144 243) by itself (i.e., 144 243 × 144 243); the square of 144 243 is sometimes called "raising 144 243 to the power 2", or "144 243 squared".
The square of 144 243 is 20 806 043 049 because 144 243 × 144 243 = 144 2432 = 20 806 043 049.
As a consequence, 144 243 is the square root of 20 806 043 049.
The multiples of 144 243 are all integers evenly divisible by 144 243, that is all numbers such that the remainder of the division by 144 243 is zero. There are infinitely many multiples of 144 243. The smallest multiples of 144 243 are: