It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 509 242 326 is not a prime number.
For example, 509 242 326 can be divided by 2: 509 242 326 / 2 = 254 621 163.
For 509 242 326 to be a prime number, it would have been required that 509 242 326 has only two divisors, i.e., itself and 1.
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509 242 326 is an even number, because it is evenly divisible by 2: 509 242 326 / 2 = 254 621 163.
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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 509 242 326 is about 22 566.398.
Thus, the square root of 509 242 326 is not an integer, and therefore 509 242 326 is not a square number.
The square of a number (here 509 242 326) is the result of the product of this number (509 242 326) by itself (i.e., 509 242 326 × 509 242 326); the square of 509 242 326 is sometimes called "raising 509 242 326 to the power 2", or "509 242 326 squared".
The square of 509 242 326 is 259 327 746 589 890 272 because 509 242 326 × 509 242 326 = 509 242 3262 = 259 327 746 589 890 272.
As a consequence, 509 242 326 is the square root of 259 327 746 589 890 272.
509 242 326 is a number with 9 digits.
The multiples of 509 242 326 are all integers evenly divisible by 509 242 326, that is all numbers such that the remainder of the division by 509 242 326 is zero. There are infinitely many multiples of 509 242 326. The smallest multiples of 509 242 326 are: