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%I #13 Jun 15 2022 15:54:34
%S 8,2,2,2,2,3,37,3,19,41,3,3,3,7,13,13,3,11123771,7,149,317,941,229,
%T 31219729,11,2084656339,3,347,911,118189,11,613,496501723,97,130517,
%U 917327,53,1832651281459,3,3,3,11,139,653,3863,5107
%N Trajectory of 8 under prime factor concatenation procedure.
%H Patrick De Geest, <a href="http://www.worldofnumbers.com/topic1.htm">Home Primes</a>
%o (Python)
%o from sympy import factorint
%o def iterate(n):
%o flst, f = [n], sorted(factorint(n, multiple=True))
%o while len(f) > 1:
%o flst += f
%o f = sorted(factorint(int("".join(map(str, f))), multiple=True))
%o return flst
%o print(iterate(8)) # _Michael S. Branicky_, Aug 02 2021
%Y Cf. A037273, A006919.
%K fini,full,nonn,tabf,base
%O 0,1
%A _Jeff Burch_
%E Edited by _Charles R Greathouse IV_, Apr 30 2010
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