It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 298 023 is not a prime number.
For example, 298 023 can be divided by 3: 298 023 / 3 = 99 341.
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For 298 023 to be a prime number, it would have been required that 298 023 has only two divisors, i.e., itself and 1.
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298 023 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 298 023 is about 545.915.
Thus, the square root of 298 023 is not an integer, and therefore 298 023 is not a square number.
The square of a number (here 298 023) is the result of the product of this number (298 023) by itself (i.e., 298 023 × 298 023); the square of 298 023 is sometimes called "raising 298 023 to the power 2", or "298 023 squared".
The square of 298 023 is 88 817 708 529 because 298 023 × 298 023 = 298 0232 = 88 817 708 529.
As a consequence, 298 023 is the square root of 88 817 708 529.
The multiples of 298 023 are all integers evenly divisible by 298 023, that is all numbers such that the remainder of the division by 298 023 is zero. There are infinitely many multiples of 298 023. The smallest multiples of 298 023 are: