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2007 All-Russian Olympiad
7
product of all primes, which are less than $n$
product of all primes, which are less than $n$
Source: All-Russian 2007
May 4, 2007
number theory
Problem Statement
For an integer
n
>
3
n>3
n
>
3
denote by
n
?
n?
n
?
the product of all primes less than
n
n
n
. Solve the equation
n
?
=
2
n
+
16
n?=2n+16
n
?
=
2
n
+
16
.V. Senderov
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