Prime 21-Tuplets

 Last updated: 27 December 2018

Smallest & first known to given pattern
622803914376064301858782434517 + d, d = 0, 4, 6, 10, 12, 16, 24, 30, 34, 40, 42, 46, 52, 54, 60, 66, 70, 72, 76, 82, 84
(30 digits, December 27, 2018, Raanan Chermoni & Jaroslaw Wroblewski)

248283957683772055928836513589 + d, d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80, 84
(30 digits, 1 Aug 2016, Raanan Chermoni & Jaroslaw Wroblewski)

138433730977092118055599751669 + d, d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80, 84
(30 digits, 8 Oct 2015, Raanan Chermoni & Jaroslaw Wroblewski)

First non-trivial known to given pattern
39433867730216371575457664399 + d, d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80, 84
(29 digits, 8 Jan 2015, Raanan Chermoni & Jaroslaw Wroblewski)

{29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113}