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Answers
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27
Examples of seemingly elementary problems that are hard to solve?
7
Teaching undergraduate students to write proofs
7
Contest problems with connections to deeper mathematics.
18
Every prime number > 19 divides one plus the product of two smaller primes?
16
Series whose convergence is not known
11
Which Fibonacci numbers are the sum of two squares?
8
which integers take the form x^2 + xy + y^2 ?
3
Question on consecutive integers with similar prime factorizations
13
Primes with more ones than zeroes in their Binary expansion
22
Combinatorial interpretation of ${i\choose n}$, where $i^2=-1$
6
Why is the Chebyshev function relevant to the Prime Number Theorem
28
Number of elements in the set {1,…,n}*{1,..,n}
18
A curious limit involving prime numbers and composite numbers
17
Knight tour prime (conjecture)
5
There are two points on the Earth’s surface that … ?
1
Finding information about the basics of an advanced math topic
10
Binomial coefficient in Andrews' partition book
4
Density of a set of integers
6
averages of Euler-phi function and similar
6
Median largest-prime-factor
5
Reference for the expected number of prime factors of n larger than n^alpha is -log alpha
2
The Inverse of the Euler Totient Function
17
Using Quotient of Prime Numbers to Approximation Reals
0
Estimating a sum of gauss sums
7
q-Pochhammer Symbol Identity
3
Logarithmic Integral of n^Zeta Zeroes and certain nested sums of the fractional part function
3
Better error bounds for partial sums of reciprocals of primes?
8
The tightest prime zipper
6
Is the Cheeger constant of an induced subgraph of a cube at most 1?
12
An application of Mobius Inversion in a paper of Shintani
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