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Regional Mathematical Olympiad
2001 India Regional Mathematical Olympiad
2
Find all primes
Find all primes
Source: Indian RMO 2001 Problem 2
October 27, 2005
Gauss
Problem Statement
Find all primes
p
p
p
and
q
q
q
such that
p
2
+
7
p
q
+
q
2
p^2 + 7pq + q^2
p
2
+
7
pq
+
q
2
is a perfect square.
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