10331

This number is a prime.

10331 is the first term of a sequence defined by: S(1)=a, S(2)=b, S(n+1)=S(n)+S(n-1)+c, where a < b > 0, for 1 <= n <= k composed from 19 primes. This is the largest known sequence of this type: 10331, 67073, 109619, 208907, 350741, 591863, 974819, 1598897, 2605931, 4237043, 6875189, 11144447, 18051851, 29228513, 47312579, 76573307, 123918101, 200523623, 324473939. In this sequence, c=32215. By Dmitry Kamenetsky. [Rivera]