It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 997 136 998 is not a prime number.
For example, 997 136 998 can be divided by 2: 997 136 998 / 2 = 498 568 499.
For 997 136 998 to be a prime number, it would have been required that 997 136 998 has only two divisors, i.e., itself and 1.
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997 136 998 is an even number, because it is evenly divisible by 2: 997 136 998 / 2 = 498 568 499.
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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 997 136 998 is about 31 577.476.
Thus, the square root of 997 136 998 is not an integer, and therefore 997 136 998 is not a square number.
The square of a number (here 997 136 998) is the result of the product of this number (997 136 998) by itself (i.e., 997 136 998 × 997 136 998); the square of 997 136 998 is sometimes called "raising 997 136 998 to the power 2", or "997 136 998 squared".
The square of 997 136 998 is 994 282 192 780 451 968 because 997 136 998 × 997 136 998 = 997 136 9982 = 994 282 192 780 451 968.
As a consequence, 997 136 998 is the square root of 994 282 192 780 451 968.
997 136 998 is a number with 9 digits.
The multiples of 997 136 998 are all integers evenly divisible by 997 136 998, that is all numbers such that the remainder of the division by 997 136 998 is zero. There are infinitely many multiples of 997 136 998. The smallest multiples of 997 136 998 are: