It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 335 243 is not a prime number.
For example, 335 243 can be divided by 523: 335 243 / 523 = 641.
For 335 243 to be a prime number, it would have been required that 335 243 has only two divisors, i.e., itself and 1.
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335 243 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 335 243 is about 579.002.
Thus, the square root of 335 243 is not an integer, and therefore 335 243 is not a square number.
The square of a number (here 335 243) is the result of the product of this number (335 243) by itself (i.e., 335 243 × 335 243); the square of 335 243 is sometimes called "raising 335 243 to the power 2", or "335 243 squared".
The square of 335 243 is 112 387 869 049 because 335 243 × 335 243 = 335 2432 = 112 387 869 049.
As a consequence, 335 243 is the square root of 112 387 869 049.
The multiples of 335 243 are all integers evenly divisible by 335 243, that is all numbers such that the remainder of the division by 335 243 is zero. There are infinitely many multiples of 335 243. The smallest multiples of 335 243 are: