It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 136 729 is not a prime number.
For example, 136 729 can be divided by 73: 136 729 / 73 = 1 873.
For 136 729 to be a prime number, it would have been required that 136 729 has only two divisors, i.e., itself and 1.
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136 729 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 136 729 is about 369.769.
Thus, the square root of 136 729 is not an integer, and therefore 136 729 is not a square number.
The square of a number (here 136 729) is the result of the product of this number (136 729) by itself (i.e., 136 729 × 136 729); the square of 136 729 is sometimes called "raising 136 729 to the power 2", or "136 729 squared".
The square of 136 729 is 18 694 819 441 because 136 729 × 136 729 = 136 7292 = 18 694 819 441.
As a consequence, 136 729 is the square root of 18 694 819 441.
The multiples of 136 729 are all integers evenly divisible by 136 729, that is all numbers such that the remainder of the division by 136 729 is zero. There are infinitely many multiples of 136 729. The smallest multiples of 136 729 are: