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Balkan MO
1999 Balkan MO
2
2
Part of
1999 Balkan MO
Problems
(1)
p is an odd prime congruent to 2 mod 3
Source: Balkan MO 1999, Problem 2
4/24/2006
Let
p
p
p
be an odd prime congruent to 2 modulo 3. Prove that at most
p
−
1
p-1
p
−
1
members of the set
{
m
2
−
n
3
−
1
∣
0
<
m
,
n
<
p
}
\{m^2 - n^3 - 1 \mid 0 < m,\ n < p\}
{
m
2
−
n
3
−
1
∣
0
<
m
,
n
<
p
}
are divisible by
p
p
p
.
number theory proposed
number theory