It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 748 209 is not a prime number.
For example, 748 209 can be divided by 3: 748 209 / 3 = 249 403.
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For 748 209 to be a prime number, it would have been required that 748 209 has only two divisors, i.e., itself and 1.
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748 209 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 748 209 is about 864.991.
Thus, the square root of 748 209 is not an integer, and therefore 748 209 is not a square number.
The square of a number (here 748 209) is the result of the product of this number (748 209) by itself (i.e., 748 209 × 748 209); the square of 748 209 is sometimes called "raising 748 209 to the power 2", or "748 209 squared".
The square of 748 209 is 559 816 707 681 because 748 209 × 748 209 = 748 2092 = 559 816 707 681.
As a consequence, 748 209 is the square root of 559 816 707 681.
The multiples of 748 209 are all integers evenly divisible by 748 209, that is all numbers such that the remainder of the division by 748 209 is zero. There are infinitely many multiples of 748 209. The smallest multiples of 748 209 are: