It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 712 991 is not a prime number.
For example, 712 991 can be divided by 73: 712 991 / 73 = 9 767.
For 712 991 to be a prime number, it would have been required that 712 991 has only two divisors, i.e., itself and 1.
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712 991 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 712 991 is about 844.388.
Thus, the square root of 712 991 is not an integer, and therefore 712 991 is not a square number.
The square of a number (here 712 991) is the result of the product of this number (712 991) by itself (i.e., 712 991 × 712 991); the square of 712 991 is sometimes called "raising 712 991 to the power 2", or "712 991 squared".
The square of 712 991 is 508 356 166 081 because 712 991 × 712 991 = 712 9912 = 508 356 166 081.
As a consequence, 712 991 is the square root of 508 356 166 081.
The multiples of 712 991 are all integers evenly divisible by 712 991, that is all numbers such that the remainder of the division by 712 991 is zero. There are infinitely many multiples of 712 991. The smallest multiples of 712 991 are: