[seqfan] Re: Numbers with 3 divisors

Omar E. Pol info at polprimos.com
Fri Aug 19 00:56:00 CEST 2011

About the numbers with p divisors, where p is prime:

Yes, the numbers with 3 divisors are the squares of primes. 

More generally; if p is prime then the n-th number with p divisors is equal 
to the n-th prime raised to power p-1.

Cf. A000040, A001248, A030514, A030516, A030629, A030631, A030635, A030637, 

Best regards,

Omar E. Pol

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