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15
Numbers are too large to show $65^{64}+64^{65}$ is not a prime
mar 13 '12 at 20:27
9
Non-standard geometry problem
aug 13 '11 at 2:09
6
Constructing a number not in $\bigcup\limits_{k=1}^{\infty} (q_k-\frac{\epsilon}{2^k},q_k+\frac{\epsilon}{2^k})$
sep 1 '11 at 4:14
4
Counting the number of paths on a graph
dec 21 '11 at 5:00
3
Spanning Trees of the Complete Graph Avoiding a Given Tree
aug 23 '11 at 5:04
1
Hard planar graph problem
apr 12 '12 at 3:43
0
Finding the minimum number of students
sep 1 '11 at 3:06
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