

A084797


Greatest number formed by concatenating prime factors of n in base 10.


4



1, 2, 3, 22, 5, 32, 7, 222, 33, 52, 11, 322, 13, 72, 53, 2222, 17, 332, 19, 522, 73, 211, 23, 3222, 55, 213, 333, 722, 29, 532, 31, 22222, 311, 217, 75, 3322, 37, 219, 313, 5222, 41, 732, 43, 2211, 533, 232, 47, 32222, 77, 552, 317, 2213, 53, 3332, 511, 7222
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OFFSET

1,2


LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..20000


MAPLE

with(combinat):
a:= n> `if`(n=1, 1, max(map(x> parse(cat(x[])),
permute([seq(i[1]$i[2], i=ifactors(n)[2])]))[])):
seq(a(n), n=1..100); # Alois P. Heinz, May 02 2016


CROSSREFS

Different from A084796. Cf. A073646.
Sequence in context: A037276 A068190 A084796 * A163902 A154865 A032810
Adjacent sequences: A084794 A084795 A084796 * A084798 A084799 A084800


KEYWORD

nonn,look,base


AUTHOR

N. J. A. Sloane, Jul 19, 2003


EXTENSIONS

More terms from Alois P. Heinz, May 02 2016


STATUS

approved



