 All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars  perplexus dot info  Armstrong plus one : Armstwo (Posted on 2021-12-27) An Armstrong number is a positive integer that equals the sum of M-th powers of their digits when the number is M-digit long.
153 is an Armstrong number, since: 13+53+33=153.
Sloane's A005188 has an article on this, in which inter-alia it is mentioned that the sequence of Armstrong numbers terminates at the 88th term.

An Armstwo number is a base ten, M-digit long positive integer which is equal to the sum of M-th powers of one greater than each of the digits.
For example, if we check for 153, we find that:
23+63+43= 288, which is NOT equal to 153.

Determine the smallest Armstwo number.

**** Heartfelt thanks to Larry for inspiring this puzzle.

 See The Solution Submitted by K Sengupta Rating: 5.0000 (1 votes) Subject Author Date Proof of finite number of solutions Paul 2021-12-27 20:26:53 MATLAB solution Charlie 2021-12-27 11:31:01 Solution Larry 2021-12-27 10:35:31 Please log in:

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