It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 147 729 is not a prime number.
For example, 147 729 can be divided by 3: 147 729 / 3 = 49 243.
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For 147 729 to be a prime number, it would have been required that 147 729 has only two divisors, i.e., itself and 1.
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147 729 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 147 729 is about 384.355.
Thus, the square root of 147 729 is not an integer, and therefore 147 729 is not a square number.
The square of a number (here 147 729) is the result of the product of this number (147 729) by itself (i.e., 147 729 × 147 729); the square of 147 729 is sometimes called "raising 147 729 to the power 2", or "147 729 squared".
The square of 147 729 is 21 823 857 441 because 147 729 × 147 729 = 147 7292 = 21 823 857 441.
As a consequence, 147 729 is the square root of 21 823 857 441.
The multiples of 147 729 are all integers evenly divisible by 147 729, that is all numbers such that the remainder of the division by 147 729 is zero. There are infinitely many multiples of 147 729. The smallest multiples of 147 729 are: