Stack Exchange
log in
chat
meta
about
Stack Exchange
All Sites
Hot Questions
Top Users
Newsletters
Blogs
r.e.s.
top
accounts
reputation
activity
favorites
subscriptions
Top Questions
22
votes
Always oddly-many ones in the binary expression for $10^{10^{n}}$?
elementary-number-theory
computer-science
discrete-mathematics
asked Oct 5 '11 at 15:53
math.stackexchange.com
16
votes
What is the millionth decimal digit of the (10^10^10^10)th prime?
elementary-number-theory
prime-numbers
discrete-mathematics
recreational-mathematics
asked Oct 28 '11 at 14:38
math.stackexchange.com
16
votes
Does iterating $n \to 2n+1$ always eventually produce a prime number?
number-theory
prime-numbers
asked Dec 25 '11 at 20:50
math.stackexchange.com
12
votes
Shortest terminating program whose output size exceeds Graham's number
code-golf
math
algorithm
asked Jun 22 '12 at 2:37
codegolf.stackexchange.com
9
votes
How many mesas begin with a given string?
code-golf
asked Apr 22 '12 at 20:22
codegolf.stackexchange.com
7
votes
What is the largest $n$ for which the $n$th prime is known?
prime-numbers
asked Oct 23 '11 at 23:18
math.stackexchange.com
6
votes
Combinatorial interpretation of the Prime Number Theorem?
number-theory
combinatorics
prime-numbers
asked Oct 18 '11 at 15:11
math.stackexchange.com
5
votes
Is string X a subsequence of string Y?
code-golf
string
asked Apr 15 '12 at 21:15
codegolf.stackexchange.com
5
votes
Program that outputs a program that outputs a program … that outputs “Hello!”
code-golf
asked Jul 4 '12 at 20:19
codegolf.stackexchange.com
5
votes
Does $\Sigma(n+1)-\Sigma(n)$ eventually dominate every computable function?
reference-request
computability
asked Nov 28 '11 at 5:12
cstheory.stackexchange.com
Top Answers
12
Always oddly-many ones in the binary expression for $10^{10^{n}}$?
math.stackexchange.com
8
Busy Brain Beaver
codegolf.stackexchange.com
6
What is the millionth decimal digit of the (10^10^10^10)th prime?
math.stackexchange.com
6
Polarization: etymology question
math.stackexchange.com
6
Rosetta Stone Challenge: Find the rule for a series
codegolf.stackexchange.com
6
How to fit a Weibull distribution to input data containing zeroes?
stats.stackexchange.com
5
does this matrix represent some string
codegolf.stackexchange.com
Stack Exchange works best with JavaScript enabled