mersenneforum.org - View Single Post - Prime posting thread, part 2. (With a catch.)

Batalov · 2010-11-02, 23:57

Well, that contradicts the original definition - "no prime substrings" (of any length). That's too many forks on the road - for my taste. I am searching for large members in http://oeis.org/classic/A033274 with near-repdigit property.

Also, there's no such sequence "Primes that do not contain any other primes as a substring longer than one digit*" (it would have contained 1009,1021,1049,1051,1063 )... but this of course can be solved, too, per se, and with near-repdigit property.

*or insert another description of an exemption

2010-11-02, 23:57	#42
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2723₁₆ Posts	Well, that contradicts the original definition - "no prime substrings" (of any length). That's too many forks on the road - for my taste. I am searching for large members in http://oeis.org/classic/A033274 with near-repdigit property. Also, there's no such sequence "Primes that do not contain any other primes as a substring longer than one digit" (it would have contained 1009,1021,1049,1051,1063 )... but this of course can be solved, too, per se, and with near-repdigit property. or insert another description of an exemption