I see, I missed an earlier message in the thread. On Fri, Jul 26, 2019 at 4:15 PM Allan Wechsler <acwacw@gmail.com> wrote:
By my reading, Eric never insists on the smallest. His very first example starts 8, 42 ...
On Fri, Jul 26, 2019, 6:12 PM Mike Stay <metaweta@gmail.com> wrote:
I must not understand the rules. Is it not the smallest number whose digits multiply to give the previous one?
On Fri, Jul 26, 2019 at 3:57 PM Allan Wechsler <acwacw@gmail.com> wrote:
Because 1449=3^2*7*23 is not 7-smooth, so it does not permit an
extension.
On Fri, Jul 26, 2019, 5:27 PM Mike Stay <metaweta@gmail.com> wrote:
Why 1944 and not 1449?
On Fri, Jul 26, 2019 at 12:30 AM Éric Angelini <
eric.angelini@skynet.be>
wrote:
5 terms (with my smartphone)! 6,16,144,1944,3899,... Best, É.
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