It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 321 104 is not a prime number.
For example, 321 104 can be divided by 2: 321 104 / 2 = 160 552.
For 321 104 to be a prime number, it would have been required that 321 104 has only two divisors, i.e., itself and 1.
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321 104 is an even number, because it is evenly divisible by 2: 321 104 / 2 = 160 552.
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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 321 104 is about 566.660.
Thus, the square root of 321 104 is not an integer, and therefore 321 104 is not a square number.
The square of a number (here 321 104) is the result of the product of this number (321 104) by itself (i.e., 321 104 × 321 104); the square of 321 104 is sometimes called "raising 321 104 to the power 2", or "321 104 squared".
The square of 321 104 is 103 107 778 816 because 321 104 × 321 104 = 321 1042 = 103 107 778 816.
As a consequence, 321 104 is the square root of 103 107 778 816.
The multiples of 321 104 are all integers evenly divisible by 321 104, that is all numbers such that the remainder of the division by 321 104 is zero. There are infinitely many multiples of 321 104. The smallest multiples of 321 104 are: