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16
2016 Guts #16
2016 Guts #16
Source:
December 24, 2016
Problem Statement
Determine the number of integers
2
≤
n
≤
2016
2 \le n \le 2016
2
≤
n
≤
2016
such that
n
n
−
1
n^n-1
n
n
−
1
is divisible by
2
2
2
,
3
3
3
,
5
5
5
,
7
7
7
.
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