It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 996 243 is not a prime number.
For example, 996 243 can be divided by 3: 996 243 / 3 = 332 081.
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For 996 243 to be a prime number, it would have been required that 996 243 has only two divisors, i.e., itself and 1.
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996 243 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 996 243 is about 998.120.
Thus, the square root of 996 243 is not an integer, and therefore 996 243 is not a square number.
The square of a number (here 996 243) is the result of the product of this number (996 243) by itself (i.e., 996 243 × 996 243); the square of 996 243 is sometimes called "raising 996 243 to the power 2", or "996 243 squared".
The square of 996 243 is 992 500 115 049 because 996 243 × 996 243 = 996 2432 = 992 500 115 049.
As a consequence, 996 243 is the square root of 992 500 115 049.
The multiples of 996 243 are all integers evenly divisible by 996 243, that is all numbers such that the remainder of the division by 996 243 is zero. There are infinitely many multiples of 996 243. The smallest multiples of 996 243 are: