It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 248 738 is not a prime number.
For example, 248 738 can be divided by 2: 248 738 / 2 = 124 369.
For 248 738 to be a prime number, it would have been required that 248 738 has only two divisors, i.e., itself and 1.
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248 738 is an even number, because it is evenly divisible by 2: 248 738 / 2 = 124 369.
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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 248 738 is about 498.736.
Thus, the square root of 248 738 is not an integer, and therefore 248 738 is not a square number.
The square of a number (here 248 738) is the result of the product of this number (248 738) by itself (i.e., 248 738 × 248 738); the square of 248 738 is sometimes called "raising 248 738 to the power 2", or "248 738 squared".
The square of 248 738 is 61 870 592 644 because 248 738 × 248 738 = 248 7382 = 61 870 592 644.
As a consequence, 248 738 is the square root of 61 870 592 644.
The multiples of 248 738 are all integers evenly divisible by 248 738, that is all numbers such that the remainder of the division by 248 738 is zero. There are infinitely many multiples of 248 738. The smallest multiples of 248 738 are: