Check for perfect square
38805
Prove that $x^{2} \equiv -1 \pmod p$ has no solutions if prime $p \equiv 3 \pmod 4$.
91951
How do I check if an integer is even or odd?
54030
Square and square root and negative numbers
56983
Square of a function with an essential singularity
15976
Smallest possible triangle to contain a square
21898
Find all primes $p$ such that $ p^3-4p+9 $ is a perfect square.
127566
$2AB$ is a perfect square and $A+B$ is not a perfect square
91560
Square Fibonacci numbers
57992
choosing points interior to a square
136366
Show that if $2+2\sqrt{28n^2+1}$ is an integer then it must be perfect square.
63383
Integers $n$ for which $|2^n + 5^n – 65|$ is a perfect square
63895
What is the next perfect square of the form 14444... in decimal notation?
65581
$m$ is a perfect square iff $m$ has an odd number of divisors?
9146
Proving that a list of perfect square numbers is complete
110331
How to match exponent that might be 1?
122207
Use the Division Algorithm to show the square of any integer is in the form $3k$ or $3k+1$
120498
Why perfect square has odd number of factors