Hosted by The Math Forum

Problem of the Week 1237

Palindromic Sums

Express 314159265358979323846 as a sum of positive palindromes, the idea being to use as few summands as you can.

Note: All integers are in base 10. A palindrome is an integer that is unchanged when its digits are reversed, such as 191 or 2332.

Source: This problem arose from a paper by Cilleruelo and Luca and also William Banks (INTEGERS, volume 16, 2016, A3).

[View the solution]



17 May 2017