It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 159 263 is not a prime number.
For example, 159 263 can be divided by 13: 159 263 / 13 = 12 251.
For 159 263 to be a prime number, it would have been required that 159 263 has only two divisors, i.e., itself and 1.
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159 263 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 159 263 is about 399.078.
Thus, the square root of 159 263 is not an integer, and therefore 159 263 is not a square number.
The square of a number (here 159 263) is the result of the product of this number (159 263) by itself (i.e., 159 263 × 159 263); the square of 159 263 is sometimes called "raising 159 263 to the power 2", or "159 263 squared".
The square of 159 263 is 25 364 703 169 because 159 263 × 159 263 = 159 2632 = 25 364 703 169.
As a consequence, 159 263 is the square root of 25 364 703 169.
The multiples of 159 263 are all integers evenly divisible by 159 263, that is all numbers such that the remainder of the division by 159 263 is zero. There are infinitely many multiples of 159 263. The smallest multiples of 159 263 are: