Number of integers less than $x$ with $k$ prime divisors (not necessarily different)
16459
Limit of ratios of numbers with $m$ factors and primes
65764
Partitioning $\{1,2,\ldots,k\}$ into $p$ subsets with equal sums, where $p$ is prime
118452
how to prove $\mathbb Z_n$ has divisors of zero if and only if $n$ is not prime
12374
Approximation to the prime counting function
152870
Near integers in powers of binomials with radicals
7421
Fastest way to list all primes below N
15314
Number of solutions to $x^n \equiv 1 \mod p$
107990
Does there exist an integer $x$ satisfying the following congruences?
105442
Show that any prime divisor of $x^4+x^3+x^2+x+1$, with $x\in\mathbb{N}$, is $5$ or $1$ mod $5$
134352
The number of possible factorizations of a positive integer.
37514
How many integers less than $1000$ can be expressed in the form $\frac{(x + y + z)^2}{xyz}$?
63702
There is a prime between $n$ and $n^2$, without Bertrand
59073
Method for Counting the Divisors of a number
136947
Simple Mersenne prime divisibility proofs
146098
Number of nonempty subsets of a set with $n$ elements
45144
Another way to write least prime factor.
14783
A Number Theory problem (GCD)