This road sign is on westbound US Hwy-60 in Superior, Arizona.

The road sign says...

+---------------------+ | Florence Jct 13 | | Phoenix 61 | +---------------------+the numbers are: 13 61 rsStateEval 61 - 13 = 48 * Arizona was the 48th state admitted to the Union. primeRS: 13 and 61 are both prime numbers BARSfunc rsAgeEval: 13 * sqrt(reverse_digits(61)) = 52 * RoadHacker was 52 years young when he found this road sign. * reverse_digits(n) = the digits of n reversed * domain: n must be a prime number * reverse_digits(61) = 16 BARSfunc math: mult_digits(13)! = mult_digits(61) * mult_digits(n) = product of the digits of n * domain: n must be a prime number * mult_digits(13) = 1*3; mult_digits(61) = 6*1 BARSfunc off-by-one rsStateEval: reverse_digits(13) + reverse_digits(61) = 48-1 * Arizona was the 48th state admitted to the Union. * reverse_digits(13) = 31; reverse_digits(61) = 16

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 04 April 2010

This work is licensed under a Creative Commons Attribution 3.0 United States License.