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PEN Problems
PEN A Problems
114
114
Part of
PEN A Problems
Problems
(1)
A 114
Source:
5/25/2007
What is the greatest common divisor of the set of numbers
{
16
n
+
10
n
−
1
∣
n
=
1
,
2
,
⋯
}
?
\{{16}^{n}+10n-1 \; \vert \; n=1,2,\cdots \}?
{
16
n
+
10
n
−
1
∣
n
=
1
,
2
,
⋯
}?
number theory
greatest common divisor
modular arithmetic
Divisibility Theory