A037926 - OEIS

%I #8 Aug 11 2024 14:41:31

%S 20,2,2,5,3,3,5,5,5,11,61,11,4651,3,3,12739,17,194867,19,41,22073,709,

%T 273797,3,97,137,17791,11,3610337981,7,3391,4786213,3,3,3,3,7,23,31,

%U 1815403,13,17,23,655857429041,3,31,8308475676071413

%N Trajectory of 20 under prime factor concatenation procedure.

%H P. De Geest, <a href="https://www.worldofnumbers.com/topic1.htm">Home Primes</a>

%Y Cf. A037273.

%K fini,full,nonn,tabf,base

%O 0,1

%A _Jeff Burch_

%E Edited by _Charles R Greathouse IV_, Apr 30 2010