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No, it is not.
Incidentally, is a number p is prime then its 2 factors are 1 and p. Their sum is p+1.
If p is a perfect number then this sum must be 2p.
That is, p+1 = 2p or p = 1.
But 1 is not a prime. So no prime can be a perfect number and since 13 is prime, it cannot be a perfect number.
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How do you check if a number is a perfect square?
For a number to be a perfect square, the number's square root has to be a whole number. 9 is a perfect square because its square root is a whole number, 3. If the square root of the number is a decimal, then it is not a perfect square. For example, 13 does not divide evenly so it not a perfect square.
Is the number 13 a square number or a square root of a number?
It is both.13 is the square of +/- 3.6056, approx. However, since it is not the square of an integer, it is not a perfect square.It is also the square root of 169.
Is the square root of 13 irrational or rational?
The square root of 13 is irrational. All square roots of whole numbers are irrational unless the number is a perfect square.
What is it called when a number has a whole number square root?
Then the number is called a "perfect square".Then the number is called a "perfect square".Then the number is called a "perfect square".Then the number is called a "perfect square".
Is the square root of 13 a whole number?
No, √13 is an irrational number. Only perfect squares have whole numbers square roots, they are 1², 2³, 3², 4², ... which are 1, 4, 9, 16, ...
