This road sign is on southbound NM Hwy-338 in New Mexico.

The road sign says...

+------------------+ | Cotton City 2 | | Animas 13 | | Playas 31 | +------------------+the numbers are: 2 13 31 primeRS: All of the numbers in this sign are prime numbers. rs42Eval: 31 + 13 - 2 = 42 * 42 is the "Answer to Life, the Universe, and Everything" rsFacebookStatusLenEval: summation(13, 31) + 2 = 420 * Maximum length of a Facebook status update is 420 characters. * summation(13, 31) = 13+14+15+...+29+30+31 = 418 off-by-one rsStateEval: 2 + 13 + 31 = 47-1 * New Mexico was the 47th state admitted to the Union. BARSfunc math: mult_digits(13)! / 2 = mult_digits(31) * mult_digits(n) = product of the digits of n * domain: n must be a prime number * mult_digits(13) = 1*3 = 3; 3! = 6; mult_digits(31)= 3*1 = 3 BARSfunc rsAgeEval: 31 + sum_digits(13)! - 2 = 53 * RoadHacker was 53 years young when he found this road sign. * sum_digits(n) = sum the digits of n * domain: n must be a prime number * sum_digits(13) = 1+3 = 4; 4! = 24 BARSfunc off-by-one rsAgeEval: 2 * (13 + reverse_digits(31)) = 53-1 * RoadHacker was 53 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(31) = 13## Update::2013.12.29

This BARS needed to be updated because the

rsAllPrimeslabel was changed toprimeRS.the numbers are: 2 13 31 rsCardinalityEval: 31 % 13 - 2 = 3 * There are three numbers in this road sign. off-by-one rsAgeEval: 2 * 13 + 31 = 56+1 * MathBabbler was 56 years young when he found this equation.

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

**Created:** 30 April 2011

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