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Mathematics
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apprenant
  • Member for 7 years, 6 months
  • Last seen more than a month ago
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9
Is $7^4-1=2^5 \times 3 \times 5^2$ the only counterexample?
Jan 19, 2017
7
Prove $n^5+n^4+1$ is not a prime
Jan 19, 2017
5
How to solve $xy=5x+5y$ for integer solutions
Jan 25, 2017
4
Can one find a set of four positive integers in which the product of any two distinct integers is a perfect square plus one?
Jan 24, 2017
4
A Diophantine equation involving factorial
Feb 2, 2017
3
Find the result of $\sum_{n=1}^{\infty} \sin\left(\frac{1}{2^n}\right)$
Jan 22, 2017
3
Prove or disprove a claim involving Pythagorean primes
Feb 5, 2017
3
Solution of a equation .
Feb 2, 2017
2
In search of such "miraculous" triangle doublets
Jan 19, 2017
2
Prove or disprove this inequality involving fractions
Jan 21, 2017