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September 21st, 2015, 01:44 PM  #1 
Banned Camp Joined: Dec 2013 Posts: 1,117 Thanks: 41  Particular primes : summed primes
Hi, I`m still obsessed by prime number. 121123 is prime number 12+11=23 How many primes are of such form? 167 is a prime of that form 1+6=7 I did not check on OEIS so if such sequence exists yet then I`m sorry. 
September 21st, 2015, 01:53 PM  #2 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms 
Depending on how you interpret this it's https://oeis.org/A067860 or https://oeis.org/A088291 or some subsequence of one of these. 
September 21st, 2015, 02:44 PM  #3 
Banned Camp Joined: Dec 2013 Posts: 1,117 Thanks: 41 
Thank you for the references. I was working on something else (puzzle) then the idea came. I posted it. So you can lock this thread. 

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