Skip to main content
Tour
About Us
Meta
current community
Stack Exchange
chat
Meta Stack Exchange
your communities
Sign up
or
log in
to customize your list.
more stack exchange communities
company blog
Log in
Stack Exchange
All Sites
Top 400 Users
Digests
apprenant
top
accounts
reputation
activity
subscriptions
Top Questions
11
votes
Is $7^4-1=2^5 \times 3 \times 5^2$ the only counterexample?
number-theory
prime-factorization
asked Jan 19, 2017 at 14:40
math.stackexchange.com
Top Answers
7
Prove $n^5+n^4+1$ is not a prime
math.stackexchange.com
5
How to solve $xy=5x+5y$ for integer solutions
math.stackexchange.com