Number Theory from Polish maths olympiad
127816
Number theory proof mod p
144779
The number of ways to represent $(n^2+n)/4$ as a sum of $n/2$ distinct integers in $1,\dots,n$
6700
An Olympiad problem in prime numbers :can we proof that "n" is prime in this case "
45850
Prime elements in the gaussian integers
86807
The units of $\mathbb Z[\sqrt{2}]$
130162
A complete residue system from an arithmetic progression
111042
A geometry problem from high school Olympiad selection round
19446
Number theory question from today's Pre - RMO
80551
Find Units in $\mathbb{Z}[\sqrt{n}]$
148906
Finding integers $m,n$ such that $(m-n)^2=4mn/(m+n-1)$
14783
A Number Theory problem (GCD)
93291
Method for determining irreducibles and factorising in $\mathbb Z[\sqrt{d}]$
16700
Modular reduction of fractions
122698
Construction of multiplicative group of complex numbers
32350
Compilation of proofs for the summation of natural squares and cubes
146867
Combinatorial Proof Of A Number Theory Theorem--Confusion
123482
How to compute $\mathbb{Z}_n^*$, the unit group of the integers modulo $n$?