Problems & Puzzles: Problems

Problem 60.  Symmetric primes on each side.

Natalia Makarova share with us a puzzle posted by her here as a distributed computing project:

Find Smallest number such that there are n symmetric (in the gap sense) primes on each side. A055381

Current record (Feb. 10, 2015) is 633925574060895 for which n=22:

4, 9, 12, 30, 30, 165, 8021811, 1071065190, 1613902650, 1797595815015, 633925574060895

Q. Perhaps you would like to contribute more terms to A055381?

On July 13, 2015, Natalia Makarova wrote:

A colleague in my project found a new solution for n = 24:

22930603692243271: 0 70 76 118 136 156 160 178 202 222 238 250 378 390 406 426 450 468 472 492 510 552 558 628


See
http://dxdy.ru/post1035456.html#p1035456

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