The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A233783 The smallest prime that produces a set of n primes such that every prime after the first one is equal to the previous minus the product of its nonzero digits. 3
 2, 23, 251, 347, 5023, 50227, 64037, 3924211, 4952767, 43275737, 586635689, 592856489, 62527264517 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(14) > 6.8*10^11. - Giovanni Resta, Dec 16 2013 LINKS Table of n, a(n) for n=1..13. EXAMPLE Example: for n = 3, initial prime is 251, because 251 -> 251 - 2*5*1 = 241 -> 241 - 2*4*1 -> 233. CROSSREFS Cf. A063543, A233692. Sequence in context: A088085 A309221 A168128 * A300326 A068983 A083427 Adjacent sequences: A233780 A233781 A233782 * A233784 A233785 A233786 KEYWORD nonn,base,hard AUTHOR Carlos Rivera, Dec 15 2013 EXTENSIONS a(11)-a(13) from Giovanni Resta, Dec 16 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 19 14:41 EDT 2024. Contains 376013 sequences. (Running on oeis4.)