1285

Previous  ... Next

Number

$1285$ (one thousand, two hundred and eighty-five) is:

$5 \times 257$


The number of distinct free $9$-ominoes


Also see


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $35$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $35$
This article is issued from ProofWiki. The text is available under Creative Commons Attribution-ShareAlike License unless otherwise noted. Additional terms may apply for the media files.