20170420, 20:24  #12 
"Forget I exist"
Jul 2009
Dumbassville
2^{6}·131 Posts 
http://mathworld.wolfram.com/Semiprime.html producing semiprimes in theory if you add 1 to the sum of two primes you are calculating the sum of proper divisors of the semiprime produced aka the aliquot sequence sum. an emirpimes search ? etc.
Last fiddled with by science_man_88 on 20170420 at 20:26 
20170420, 21:16  #13 
Apr 2017
3 Posts 

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