It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 508 672 is not a prime number.
For example, 998 508 672 can be divided by 2: 998 508 672 / 2 = 499 254 336.
For 998 508 672 to be a prime number, it would have been required that 998 508 672 has only two divisors, i.e., itself and 1.
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998 508 672 is an even number, because it is evenly divisible by 2: 998 508 672 / 2 = 499 254 336.
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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 998 508 672 is about 31 599.188.
Thus, the square root of 998 508 672 is not an integer, and therefore 998 508 672 is not a square number.
The square of a number (here 998 508 672) is the result of the product of this number (998 508 672) by itself (i.e., 998 508 672 × 998 508 672); the square of 998 508 672 is sometimes called "raising 998 508 672 to the power 2", or "998 508 672 squared".
The square of 998 508 672 is 997 019 568 059 203 584 because 998 508 672 × 998 508 672 = 998 508 6722 = 997 019 568 059 203 584.
As a consequence, 998 508 672 is the square root of 997 019 568 059 203 584.
998 508 672 is a number with 9 digits.
The multiples of 998 508 672 are all integers evenly divisible by 998 508 672, that is all numbers such that the remainder of the division by 998 508 672 is zero. There are infinitely many multiples of 998 508 672. The smallest multiples of 998 508 672 are: