It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 130 723 is not a prime number.
For example, 130 723 can be divided by 61: 130 723 / 61 = 2 143.
For 130 723 to be a prime number, it would have been required that 130 723 has only two divisors, i.e., itself and 1.
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130 723 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 130 723 is about 361.556.
Thus, the square root of 130 723 is not an integer, and therefore 130 723 is not a square number.
The square of a number (here 130 723) is the result of the product of this number (130 723) by itself (i.e., 130 723 × 130 723); the square of 130 723 is sometimes called "raising 130 723 to the power 2", or "130 723 squared".
The square of 130 723 is 17 088 502 729 because 130 723 × 130 723 = 130 7232 = 17 088 502 729.
As a consequence, 130 723 is the square root of 17 088 502 729.
The multiples of 130 723 are all integers evenly divisible by 130 723, that is all numbers such that the remainder of the division by 130 723 is zero. There are infinitely many multiples of 130 723. The smallest multiples of 130 723 are: