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| 2 | On Line Encyclopedia Of Integer Sequences |
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| 3 | Connection |
| 5 | Twin Primes The Number Of Conjuncture |
| 15 | Moritz Stern |
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Stern Prime
If for a given prime number
there is no smaller prime 
and nonzero integer
such that
, then 
is a Stern prime. These primes were first studied by Moritz Abraham Stern, in connection
to a lesser known conjecture
of Goldbach's. Like other mathematicians of the time, Stern considered 1 to be a prime number. Thus his list of Stern primes read thus: 2, 17, 137, 227, 977, 1187, 1493. A century later the list has been amended to include 3 (as in A042978 of Sloane's OEIS) but no terms
larger than 1493 have been found. The larger of a twin prime
is not a Stern prime.