It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 130 789 is not a prime number.
For example, 130 789 can be divided by 31: 130 789 / 31 = 4 219.
For 130 789 to be a prime number, it would have been required that 130 789 has only two divisors, i.e., itself and 1.
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130 789 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 130 789 is about 361.648.
Thus, the square root of 130 789 is not an integer, and therefore 130 789 is not a square number.
The square of a number (here 130 789) is the result of the product of this number (130 789) by itself (i.e., 130 789 × 130 789); the square of 130 789 is sometimes called "raising 130 789 to the power 2", or "130 789 squared".
The square of 130 789 is 17 105 762 521 because 130 789 × 130 789 = 130 7892 = 17 105 762 521.
As a consequence, 130 789 is the square root of 17 105 762 521.
The multiples of 130 789 are all integers evenly divisible by 130 789, that is all numbers such that the remainder of the division by 130 789 is zero. There are infinitely many multiples of 130 789. The smallest multiples of 130 789 are: