Evil number (nonfiction)

In number theory, an evil number is a non-negative number that has an even number of 1s in its binary expansion.

The first evil numbers are: 0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 24, 27, 29, 30, 33, 34, 36, 39 ...

Numbers that are not evil are called odious numbers.

Not to be confused with Evil bit (nonfiction).

Fiction cross-reference

• Crimes against mathematical constants

Nonfiction cross-reference

• Evil bit (nonfiction)
• Number (nonfiction)
• Odious number (nonfiction)

External links:

• Evil number @ Wikipedia