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Vojtěch Jarník IMC
2016 VJIMC
2
phi(n) divides n^2 + 3
phi(n) divides n^2 + 3
Source: 26th annual VJIMC (2016), Category I, Problem 2
April 10, 2016
number theory
Problem Statement
Find all positive integers
n
n
n
such that
φ
(
n
)
\varphi(n)
φ
(
n
)
divides
n
2
+
3
n^2 + 3
n
2
+
3
.
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