How to find the integer solutions of $\frac{2^m-1}{2^{m+x}-3^x}=2a+1$?
129238
Divisibility of $2^n - 1$ by $2^{m+n} - 3^m$.
20834
Integer solutions to $c=a^2-b^2$
78632
Summation equation for $2^{x-1}$
72360
Find the value of $a^{2m}+a^m+{1\over a^m}+{1\over a^{2m}}$
22093
How to show $a^{2^n}+1 \mid a^{2^m}-1$?
52278
How to solve $\sum_{k=2}^\infty {\frac{1}{k^2-1}}$
17056
How to find answer to the sum of series $\sum_{n=1}^{\infty}\frac{n}{2^n} $
153377
How to solve $y^2=3x^4+3x^2+1$ for integers.
150085
Solutions to the diophantine equation: $2a^2 + 2b^2- c^2- d^2 = 0$
131141
Solutions to $p+1=2n^2$ and $p^2+1=2m^2$ in Natural numbers.
57330
Find the number of solutions of $\sin x+2 \sin 2x- \sin 3x=3$
118197
Solve $n(n+1)(n+2)=6m^3$ in positive integers
36031
Finding modular of a fraction
4816
How to solve $\frac 1{1.2.3}+\frac 1{2.3.4}+\frac 1{3.4.5}+...$
130565
Find all solutions to $x^3+(x+1)^3+ \dots + (x+15)^3=y^3$
54608
How to find all solutions of $4^x-3^x=1$?
45037
Show $(2^m-1,2^n+1)=1$ if $m$ is odd