login
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
OFFSET
1,1
COMMENTS
a(14) > 6.8*10^11. - Giovanni Resta, Dec 16 2013
EXAMPLE
Example: for n = 3, initial prime is 251, because 251 -> 251 - 2*5*1 = 241 -> 241 - 2*4*1 -> 233.
CROSSREFS
Sequence in context: A088085 A309221 A168128 * A300326 A068983 A083427
KEYWORD
nonn,base,hard
AUTHOR
Carlos Rivera, Dec 15 2013
EXTENSIONS
a(11)-a(13) from Giovanni Resta, Dec 16 2013
STATUS
approved