It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 348 729 is not a prime number.
For example, 348 729 can be divided by 3: 348 729 / 3 = 116 243.
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For 348 729 to be a prime number, it would have been required that 348 729 has only two divisors, i.e., itself and 1.
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348 729 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 348 729 is about 590.533.
Thus, the square root of 348 729 is not an integer, and therefore 348 729 is not a square number.
The square of a number (here 348 729) is the result of the product of this number (348 729) by itself (i.e., 348 729 × 348 729); the square of 348 729 is sometimes called "raising 348 729 to the power 2", or "348 729 squared".
The square of 348 729 is 121 611 915 441 because 348 729 × 348 729 = 348 7292 = 121 611 915 441.
As a consequence, 348 729 is the square root of 121 611 915 441.
The multiples of 348 729 are all integers evenly divisible by 348 729, that is all numbers such that the remainder of the division by 348 729 is zero. There are infinitely many multiples of 348 729. The smallest multiples of 348 729 are: