It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 712 is not a prime number.
For example, 998 712 can be divided by 2: 998 712 / 2 = 499 356.
For 998 712 to be a prime number, it would have been required that 998 712 has only two divisors, i.e., itself and 1.
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998 712 is an even number, because it is evenly divisible by 2: 998 712 / 2 = 499 356.
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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 998 712 is about 999.356.
Thus, the square root of 998 712 is not an integer, and therefore 998 712 is not a square number.
The square of a number (here 998 712) is the result of the product of this number (998 712) by itself (i.e., 998 712 × 998 712); the square of 998 712 is sometimes called "raising 998 712 to the power 2", or "998 712 squared".
The square of 998 712 is 997 425 658 944 because 998 712 × 998 712 = 998 7122 = 997 425 658 944.
As a consequence, 998 712 is the square root of 997 425 658 944.
The multiples of 998 712 are all integers evenly divisible by 998 712, that is all numbers such that the remainder of the division by 998 712 is zero. There are infinitely many multiples of 998 712. The smallest multiples of 998 712 are: