Find $4$ primes that divide
$14^{60} - 33^{60}$
okay, so the easiest thing to do was to re-write that as $7^{60}2^{60} - 11^{60}3^{60}$.
However, that doesn't really help.
Next step is the little Fermat's theorem, makes sense to try with modulo $2, 3, 7, 11$. However I don't remember how to do that, how to start. Would appreciate any help.
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