

A268036


Cubes of the prime factors (with multiplicity) of n add up to n.


2




OFFSET

1,1


COMMENTS

13579716377989 and 119429556097859 are also terms, but it is not known if they are the next ones.  Jud McCranie, Feb 09 2016


LINKS



EXAMPLE

1096744 = 2^3 * 11^3 * 103 = 2^3+2^3+2^3+11^3+11^3+11^3+103^3.


PROG

(PARI) isok(n) = {my(f = factor(n)); sum(k=1, #f~, f[k, 1]^3*f[k, 2]) == n; } \\ Michel Marcus, Feb 09 2016


CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



