It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 243 164 is not a prime number.
For example, 243 164 can be divided by 2: 243 164 / 2 = 121 582.
For 243 164 to be a prime number, it would have been required that 243 164 has only two divisors, i.e., itself and 1.
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243 164 is an even number, because it is evenly divisible by 2: 243 164 / 2 = 121 582.
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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 243 164 is about 493.117.
Thus, the square root of 243 164 is not an integer, and therefore 243 164 is not a square number.
The square of a number (here 243 164) is the result of the product of this number (243 164) by itself (i.e., 243 164 × 243 164); the square of 243 164 is sometimes called "raising 243 164 to the power 2", or "243 164 squared".
The square of 243 164 is 59 128 730 896 because 243 164 × 243 164 = 243 1642 = 59 128 730 896.
As a consequence, 243 164 is the square root of 59 128 730 896.
The multiples of 243 164 are all integers evenly divisible by 243 164, that is all numbers such that the remainder of the division by 243 164 is zero. There are infinitely many multiples of 243 164. The smallest multiples of 243 164 are: