It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 998 is not a prime number.
For example, 120 998 can be divided by 2: 120 998 / 2 = 60 499.
For 120 998 to be a prime number, it would have been required that 120 998 has only two divisors, i.e., itself and 1.
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120 998 is an even number, because it is evenly divisible by 2: 120 998 / 2 = 60 499.
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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 120 998 is about 347.848.
Thus, the square root of 120 998 is not an integer, and therefore 120 998 is not a square number.
The square of a number (here 120 998) is the result of the product of this number (120 998) by itself (i.e., 120 998 × 120 998); the square of 120 998 is sometimes called "raising 120 998 to the power 2", or "120 998 squared".
The square of 120 998 is 14 640 516 004 because 120 998 × 120 998 = 120 9982 = 14 640 516 004.
As a consequence, 120 998 is the square root of 14 640 516 004.
The multiples of 120 998 are all integers evenly divisible by 120 998, that is all numbers such that the remainder of the division by 120 998 is zero. There are infinitely many multiples of 120 998. The smallest multiples of 120 998 are: