*#35 of a series that is never used. An abandoned car park. Campbell Street, Hobart, October 2010.*

Who knew that number 35 was so important? Did you know that…?

- 35 is the sum of the first five triangular numbers, making it a tetrahedral number.
- 35 is a centered cube number, a pentagonal number and a pentatope number.
- 35 is a highly cototient number, since there are more solutions to the equation x - φ(x) = 35 than there are for any other integers below it except 1.
- There are 35 free hexominoes, the polyominoes made from six squares.
- Since the greatest prime factor of 352 + 1 = 1226 is 613, which is obviously more than 35 twice, 35 is a Størmer number.

All I know is Rule 35 of the Internet!

## 2 comments:

Amazing! What is rule 35 though?

Internet Rule #35 states that "If there is not porn of it, porn will be made of it."

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