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IMO Shortlist 2007 problem N1
2007
shortlist
tb
Find all pairs of natural numbers
such that
divides
.
Author: Stephan Wagner, Austria
%V0 Find all pairs of natural numbers $(a, b)$ such that $7^a - 3^b$ divides $a^4 + b^2$. Author: Stephan Wagner, Austria
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Title
Tags
Sol.
Quality
Difficulty
1871
IMO Shortlist 1993 problem N1
1993
shortlist
tb
6
1872
IMO Shortlist 1993 problem N2
1993
shortlist
tb
0
2258
IMO Shortlist 2007 problem N2
2007
shortlist
tb
17
2260
IMO Shortlist 2007 problem N4
2007
shortlist
tb
4
2314
IMO Shortlist 2009 problem N2
2009
shortlist
tb
9
2409
MEMO 2007 pojedinačno problem 4
2007
MEMO
exp
faktorijel
tb
26