It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 523 is not a prime number.
For example, 120 523 can be divided by 13: 120 523 / 13 = 9 271.
For 120 523 to be a prime number, it would have been required that 120 523 has only two divisors, i.e., itself and 1.
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120 523 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 120 523 is about 347.164.
Thus, the square root of 120 523 is not an integer, and therefore 120 523 is not a square number.
The square of a number (here 120 523) is the result of the product of this number (120 523) by itself (i.e., 120 523 × 120 523); the square of 120 523 is sometimes called "raising 120 523 to the power 2", or "120 523 squared".
The square of 120 523 is 14 525 793 529 because 120 523 × 120 523 = 120 5232 = 14 525 793 529.
As a consequence, 120 523 is the square root of 14 525 793 529.
The multiples of 120 523 are all integers evenly divisible by 120 523, that is all numbers such that the remainder of the division by 120 523 is zero. There are infinitely many multiples of 120 523. The smallest multiples of 120 523 are: