It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 289 is not a prime number.
For example, 120 289 can be divided by 13: 120 289 / 13 = 9 253.
For 120 289 to be a prime number, it would have been required that 120 289 has only two divisors, i.e., itself and 1.
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120 289 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 120 289 is about 346.827.
Thus, the square root of 120 289 is not an integer, and therefore 120 289 is not a square number.
The square of a number (here 120 289) is the result of the product of this number (120 289) by itself (i.e., 120 289 × 120 289); the square of 120 289 is sometimes called "raising 120 289 to the power 2", or "120 289 squared".
The square of 120 289 is 14 469 443 521 because 120 289 × 120 289 = 120 2892 = 14 469 443 521.
As a consequence, 120 289 is the square root of 14 469 443 521.
The multiples of 120 289 are all integers evenly divisible by 120 289, that is all numbers such that the remainder of the division by 120 289 is zero. There are infinitely many multiples of 120 289. The smallest multiples of 120 289 are: