How to check whether an integer is a perfect square or not without using sqrt
40525
Fastest way to determine if an integer's square root is an integer
132848
Function to determine if two numbers are nearly equal when rounded to n significant decimal digits
38498
Find all primes $p$ such that $(2^{p-1}-1)/p$ is a perfect square
36098
Checking for valid floating point number
19954
Perfect set without rational numbers
152643
$(xy + 1)(yz + 1)(zx + 1) $ is a perfect square if and only if each factor is
8771
Finding the nth non square free number
97952
Square root of 1 is (not) -1
22800
Can $\sqrt{n} + \sqrt{m}$ be rational if neither $n,m$ are perfect squares?
147666
How to prove that either $2^{500} + 15$ or $2^{500} + 16$ isn't a perfect square?
74709
How to elegantly check if a number is within a range?
138081
How to determine whether a number can be written as a sum of two squares?
7898
Finding square root without using sqrt function?
60608
Test whether string is a valid integer
147848
Integer $x$ for which $x^4+x^3+x^2+x+1$ is perfect square.
84220
Questions on perfect squares
5692
Proving that there is a perfect square between $n$ and $2n$