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Austrian-Polish
2001 Austrian-Polish Competition
1
1
Part of
2001 Austrian-Polish Competition
Problems
(1)
Sum of powers
Source: APMC 2001
4/17/2006
Determine the number of positive integers
a
a
a
, so that there exist nonnegative integers
x
0
,
x
1
,
…
,
x
2001
x_0,x_1,\ldots,x_{2001}
x
0
,
x
1
,
…
,
x
2001
which satisfy the equation
a
x
0
=
∑
i
=
1
2001
a
x
i
\displaystyle a^{x_0} = \sum_{i=1}^{2001} a^{x_i}
a
x
0
=
i
=
1
∑
2001
a
x
i
modular arithmetic
number theory proposed
number theory