Square of Small Repunit is Palindromic/Mistake
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Source Work
1986: David Wells: Curious and Interesting Numbers:
- The Dictionary
- $1,111,111,111,111,111,111$
Mistake in First Edition
- The squares of repunits make a pretty pattern:
- For example: ... $1111111111111^2 = 12345678900987654321$
Mistake in Second Edition
- The squares of repunits make a pretty pattern:
- For example: ... $1,111,111,111^2 = 12,345,678,900,987,654,321$