It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 485 316 is not a prime number.
For example, 485 316 can be divided by 2: 485 316 / 2 = 242 658.
For 485 316 to be a prime number, it would have been required that 485 316 has only two divisors, i.e., itself and 1.
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485 316 is an even number, because it is evenly divisible by 2: 485 316 / 2 = 242 658.
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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 485 316 is about 696.646.
Thus, the square root of 485 316 is not an integer, and therefore 485 316 is not a square number.
The square of a number (here 485 316) is the result of the product of this number (485 316) by itself (i.e., 485 316 × 485 316); the square of 485 316 is sometimes called "raising 485 316 to the power 2", or "485 316 squared".
The square of 485 316 is 235 531 619 856 because 485 316 × 485 316 = 485 3162 = 235 531 619 856.
As a consequence, 485 316 is the square root of 235 531 619 856.
The multiples of 485 316 are all integers evenly divisible by 485 316, that is all numbers such that the remainder of the division by 485 316 is zero. There are infinitely many multiples of 485 316. The smallest multiples of 485 316 are: