A071612 a(n) is the smallest prime that is the first of n consecutive primes which are all emirps.
13, 13, 71, 733, 1193, 1193, 1193, 1193, 1193, 1193, 1477271183, 9387802769, 15423094826093
Offset: 1
Examples
1193,1201,1213,1217,1223,1229,1231,1237,1249,1259 are ten consecutive primes which are all emirps and 1193,1201,1213,1217,1223 is the first occurrence of five consecutive primes which are all emirps, so a(5) = a(6) = a(7) = a(8) = a(9) = a(10) = 1193.
Links
- Chris K. Caldwell and G. L. Honaker, Jr., Prime Curios! 9387802769
Extensions
By studying terms of the sequence A103172 we can deduce that a(11), a(12) are 1477271183 & 9387802769. - Farideh Firoozbakht, Jun 17 2010
a(13) from Giovanni Resta, Apr 23 2021
Comments