A046509 Primes with multiplicative persistence value 9.

26899889, 28698899, 28699889, 28869989, 28889699, 28899869, 28989689, 29868989, 29888699, 29968889, 29988869, 38849989, 38894899, 38898949, 38899489, 38984989, 39849889, 43898989, 43988899, 43989889, 46668899

Offset: 1

Author

Patrick De Geest, Sep 15 1998

Keywords

• nonn
• base

Examples

			26899889 -> [ 4478976 ][ 338688 ][ 27648 ][ 2688 ][ 768 ][ 336 ][ 54 ][ 20 ][ 0 ] -> one digit in nine steps.
		

Links

• Daniel Mondot, Table of n, a(n) for n = 1..10000
• Eric Weisstein's World of Mathematics, Multiplicative Persistence

Crossrefs

Intersection of A000040 and A046518.

Cf. A046500.