It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 560 318 is not a prime number.
For example, 490 560 318 can be divided by 2: 490 560 318 / 2 = 245 280 159.
For 490 560 318 to be a prime number, it would have been required that 490 560 318 has only two divisors, i.e., itself and 1.
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490 560 318 is an even number, because it is evenly divisible by 2: 490 560 318 / 2 = 245 280 159.
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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 490 560 318 is about 22 148.596.
Thus, the square root of 490 560 318 is not an integer, and therefore 490 560 318 is not a square number.
The square of a number (here 490 560 318) is the result of the product of this number (490 560 318) by itself (i.e., 490 560 318 × 490 560 318); the square of 490 560 318 is sometimes called "raising 490 560 318 to the power 2", or "490 560 318 squared".
The square of 490 560 318 is 240 649 425 596 261 120 because 490 560 318 × 490 560 318 = 490 560 3182 = 240 649 425 596 261 120.
As a consequence, 490 560 318 is the square root of 240 649 425 596 261 120.
490 560 318 is a number with 9 digits.
The multiples of 490 560 318 are all integers evenly divisible by 490 560 318, that is all numbers such that the remainder of the division by 490 560 318 is zero. There are infinitely many multiples of 490 560 318. The smallest multiples of 490 560 318 are: