It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 243 201 is not a prime number.
For example, 243 201 can be divided by 3: 243 201 / 3 = 81 067.
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For 243 201 to be a prime number, it would have been required that 243 201 has only two divisors, i.e., itself and 1.
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243 201 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 243 201 is about 493.154.
Thus, the square root of 243 201 is not an integer, and therefore 243 201 is not a square number.
The square of a number (here 243 201) is the result of the product of this number (243 201) by itself (i.e., 243 201 × 243 201); the square of 243 201 is sometimes called "raising 243 201 to the power 2", or "243 201 squared".
The square of 243 201 is 59 146 726 401 because 243 201 × 243 201 = 243 2012 = 59 146 726 401.
As a consequence, 243 201 is the square root of 59 146 726 401.
The multiples of 243 201 are all integers evenly divisible by 243 201, that is all numbers such that the remainder of the division by 243 201 is zero. There are infinitely many multiples of 243 201. The smallest multiples of 243 201 are: