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Israel Oral Olympiad
2017 Israel Oral Olympiad
3
3
Part of
2017 Israel Oral Olympiad
Problems
(1)
Differences of Powers of Primes p^q-q^p
Source: Israeli Oral Olympiad #3
1/18/2017
2017 prime numbers
p
1
,
.
.
.
,
p
2017
p_1,...,p_{2017}
p
1
,
...
,
p
2017
are given. Prove that
∏
i
<
j
(
p
i
p
j
−
p
j
p
i
)
\prod_{i<j} (p_i^{p_j}-p_j^{p_i})
∏
i
<
j
(
p
i
p
j
−
p
j
p
i
)
is divisible by 5777.
number theory
prime
prime numbers