A322748Primes p such that q=p^2+p+1 is prime and (q^2+q+1)/3 is prime.
2, 3, 5, 41, 71, 383, 827, 1217, 1931, 2729, 2969, 3491, 3671, 4751, 5039, 6551, …
The first term appear at position 6.
141592653589793238462643383279…
14159265358979323846264338327950288419716…
…495853710507922796892589235420199561121290219608640…
…68835695078149313780073623541800706191802673285511919…
…8161073084745924144429862354171687147155998810640000580…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 2 | 6 | 100,002,410 |
| 2 | 23 | 16 | 10,000,834 |
| 3 | 235 | 698 | 999,505 |
| 4 | 23541 | 29,344 | 9,885 |
| 5 | 2354171 | 15,803,259 | 115 |
| 6 | 2354171383 | not within 1,000,000,000 | 0 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.