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September 21st, 2015, 12:44 PM   #1
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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.
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September 21st, 2015, 12:53 PM   #2
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Depending on how you interpret this it's
https://oeis.org/A067860
or
https://oeis.org/A088291
or some subsequence of one of these.
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September 21st, 2015, 01:44 PM   #3
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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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