It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 299 998 798 is not a prime number.
For example, 299 998 798 can be divided by 2: 299 998 798 / 2 = 149 999 399.
For 299 998 798 to be a prime number, it would have been required that 299 998 798 has only two divisors, i.e., itself and 1.
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299 998 798 is an even number, because it is evenly divisible by 2: 299 998 798 / 2 = 149 999 399.
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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 299 998 798 is about 17 320.473.
Thus, the square root of 299 998 798 is not an integer, and therefore 299 998 798 is not a square number.
The square of a number (here 299 998 798) is the result of the product of this number (299 998 798) by itself (i.e., 299 998 798 × 299 998 798); the square of 299 998 798 is sometimes called "raising 299 998 798 to the power 2", or "299 998 798 squared".
The square of 299 998 798 is 89 999 278 801 444 800 because 299 998 798 × 299 998 798 = 299 998 7982 = 89 999 278 801 444 800.
As a consequence, 299 998 798 is the square root of 89 999 278 801 444 800.
299 998 798 is a number with 9 digits.
The multiples of 299 998 798 are all integers evenly divisible by 299 998 798, that is all numbers such that the remainder of the division by 299 998 798 is zero. There are infinitely many multiples of 299 998 798. The smallest multiples of 299 998 798 are: