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.

2, 23, 251, 347, 5023, 50227, 64037, 3924211, 4952767, 43275737, 586635689, 592856489, 62527264517

Offset: 1

Author

Carlos Rivera, Dec 15 2013

Keywords

• nonn
• base
• hard

Comments

a(14) > 6.8*10^11. - Giovanni Resta, Dec 16 2013

Examples

			Example: for n = 3, initial prime is 251, because 251 -> 251 - 2*5*1 = 241 -> 241 - 2*4*1 -> 233.
		

Crossrefs

Cf. A063543, A233692.

Extensions

a(11)-a(13) from Giovanni Resta, Dec 16 2013