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For each integer
, let
denote the greatest prime factor of
. A strange pair is a pair of distinct primes
and
such that there is no integer
for which
.
Prove that there exist infinitely many strange pairs.
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Prove that there exist infinitely many strange pairs.
This post has been edited 1 time. Last edited by magicarrow, Mar 1, 2020, 11:19 AM