How can I find the answer to $\varphi(2^{400} + 2)$?
104982
Determine $\phi(2^{399}+1)$
90300
Find the remainder when $10^{400}$ is divided by 199?
118436
Identifying the series $\sum\limits_{k=-\infty}^{\infty} 2^k x^{2^k}$
12469
$\varphi$ in $\operatorname{Hom}{(S^1, S^1)}$ are of the form $z^n$
72406
Last two digits of $2^{1000}$ via Chinese Remainder Theorem?
71586
Compare $\log_34$ and $2^\frac 1 4$
29231
Proof of : $x^{n}\equiv x^{\varphi(m)+[n \bmod \varphi(m)]} \mod m$
57041
How would you prove that $2^{50} < 3^{33}$ without directly calculating the values
115244
Integer solutions of $m^2+(m+1)^2=n^4+(n+1)^4$
51445
Number Theory: Find all solutions of $\phi(n)=16$ and $\phi(n)=24$
143194
How would you solve the diophantine $x^4+y^4=2z^2$
9223
Finding $\iiint_K (x^2 -z^2)\, dx\, dy \,dz$
119146
How to solve $n < 2^{n/8}$ for $n$?
47211
Does $\varphi(x)\le\int_0^x\varphi(t)dt$ for all $x\in[0,\infty)$ imply $\varphi\equiv0$.
78188
How can I get the smallest possible answer with the Chinese Remainder Theorem?
72360
Find the value of $a^{2m}+a^m+{1\over a^m}+{1\over a^{2m}}$
140622
Find the value of : $\lim_{x \to \infty} \sqrt{4x^2 + 4} - (2x + 2)$