It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 278 339 is not a prime number.
For example, 264 278 339 can be divided by 13: 264 278 339 / 13 = 20 329 103.
For 264 278 339 to be a prime number, it would have been required that 264 278 339 has only two divisors, i.e., itself and 1.
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264 278 339 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 264 278 339 is about 16 256.640.
Thus, the square root of 264 278 339 is not an integer, and therefore 264 278 339 is not a square number.
The square of a number (here 264 278 339) is the result of the product of this number (264 278 339) by itself (i.e., 264 278 339 × 264 278 339); the square of 264 278 339 is sometimes called "raising 264 278 339 to the power 2", or "264 278 339 squared".
The square of 264 278 339 is 69 843 040 464 598 920 because 264 278 339 × 264 278 339 = 264 278 3392 = 69 843 040 464 598 920.
As a consequence, 264 278 339 is the square root of 69 843 040 464 598 920.
264 278 339 is a number with 9 digits.
The multiples of 264 278 339 are all integers evenly divisible by 264 278 339, that is all numbers such that the remainder of the division by 264 278 339 is zero. There are infinitely many multiples of 264 278 339. The smallest multiples of 264 278 339 are: