It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 263 438 513 is not a prime number.
For example, 263 438 513 can be divided by 13: 263 438 513 / 13 = 20 264 501.
For 263 438 513 to be a prime number, it would have been required that 263 438 513 has only two divisors, i.e., itself and 1.
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263 438 513 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 263 438 513 is about 16 230.789.
Thus, the square root of 263 438 513 is not an integer, and therefore 263 438 513 is not a square number.
The square of a number (here 263 438 513) is the result of the product of this number (263 438 513) by itself (i.e., 263 438 513 × 263 438 513); the square of 263 438 513 is sometimes called "raising 263 438 513 to the power 2", or "263 438 513 squared".
The square of 263 438 513 is 69 399 850 131 651 168 because 263 438 513 × 263 438 513 = 263 438 5132 = 69 399 850 131 651 168.
As a consequence, 263 438 513 is the square root of 69 399 850 131 651 168.
263 438 513 is a number with 9 digits.
The multiples of 263 438 513 are all integers evenly divisible by 263 438 513, that is all numbers such that the remainder of the division by 263 438 513 is zero. There are infinitely many multiples of 263 438 513. The smallest multiples of 263 438 513 are: