Squares of two coprime numbers
73391
Prove that if $\gcd(a,b)=1$, then $\gcd(a^2,b^2)=1$
41641
$(n-7)(n+7)=$ some perfect square
45882
Solving a congruence without Fermat's little theorem
38167
What do I do when two squares are equally valid?
50615
Expressing a Non Negative Integer as Sums of Two Squares
91560
Square Fibonacci numbers
48502
number of ordered pairs of integers $(x,y)$ satisfying the equation
26898
Trouble solving two number theoretical problems
72666
Prime Numbers And Perfect Squares
377
Problem involving many squares and several variables.
45454
Pairs of $(p,q)$ such that $p^2 + 1 = 2 q^2$?
75318
How do you prove that a prime is the sum of two squares iff it is congruent to 1 mod 4?
54699
Product of pairwise coprime integers divides $b$ if each integer divides $b$
67899
Integer squares of the form $x^4+x^3+x^2+x+1$
106271
Solutions of Diophantine equations in Natural numbers
19071
solution set for congruence $x^2 \equiv 1 \mod m$
63240
Every two consecutive integers are coprime.