$\left\lfloor(\sqrt[3]{28}-3)^{-n}\right\rfloor$ is not divisible by 6
139718
Prove $6 \nmid [\left( \sqrt[3]{28} - 3 \right)^{-n}]$
44409
Number of Elements Not divisble by 3 or 5 or 7
26614
Fermat: Last two digits of $7^{355}$
81371
Solving recurrence $T(n) = T(\lceil n/2 \rceil) + T(\lfloor n/2 \rfloor) + \Theta(n)$
143306
Limit involving floor function: $\lim\limits_{x\to 0} x \left\lfloor\frac1x \right\rfloor$
71394
Prove the following floor function identity
139380
Fibonacci sequence divisible by 7?
91044
Why is a number that is divisible by $2$ and $3$, also divisible by $6$?
25883
Calculating $\Big\lfloor\underbrace{\sqrt{2017+\sqrt{2017+...+\sqrt{2017}}}}_\text{2017 roots}\Big\rfloor$
46158
A positive integer is divisible by $3$ iff 3 divides the sum of its digits
113237
Find the sum of the roots of the floor equation
99483
If $T(n+1)=T(n)+\lfloor \sqrt{n+1}, \rfloor$ $\forall n\geq 1$, what is $T(m^2)$?
40973
How to find $\lfloor 1/\sqrt{1}+1/\sqrt{2}+\dots+1/\sqrt{100}\rfloor $ without a calculator?
22973
Show that an integer of the form $8k + 7$ cannot be written as the sum of three squares.
16176
Primitive Pythagorean triple divisible by 3
91759
Evaluate $\lim_{x \to 0} (x\lfloor\frac{1}{x}\rfloor)$
79836
Proof for $\left\lfloor\frac 1j\left\lfloor\frac nk\right\rfloor\right\rfloor=\left\lfloor\frac n{jk}\right\rfloor$