It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 104 423 is not a prime number.
For example, 104 423 can be divided by 11: 104 423 / 11 = 9 493.
For 104 423 to be a prime number, it would have been required that 104 423 has only two divisors, i.e., itself and 1.
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104 423 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 104 423 is about 323.145.
Thus, the square root of 104 423 is not an integer, and therefore 104 423 is not a square number.
The square of a number (here 104 423) is the result of the product of this number (104 423) by itself (i.e., 104 423 × 104 423); the square of 104 423 is sometimes called "raising 104 423 to the power 2", or "104 423 squared".
The square of 104 423 is 10 904 162 929 because 104 423 × 104 423 = 104 4232 = 10 904 162 929.
As a consequence, 104 423 is the square root of 10 904 162 929.
The multiples of 104 423 are all integers evenly divisible by 104 423, that is all numbers such that the remainder of the division by 104 423 is zero. There are infinitely many multiples of 104 423. The smallest multiples of 104 423 are: