This road sign is on east bound US Highway-54 in Texhoma, Oklahoma.

The road sign says...

+--------------------------+ | Goodwell 10 | | Panhandle State Unv 10 | | Guymon 20 | +--------------------------+the numbers are: 10 10 20 the math is: 10 + 10 = 20 more math: log(10)^20 = log(10) rsCardinalityEval: 20 / 10 + log(10) = 3 * There are three numbers in this road sign * spf(n) = the sum of the prime factors of n domain: n must be a composite number * 10 is composite; spf(10) = 2+5 = 7 * 20 is composite; spf(20) = 2+2+5 = 9 off-by-one BARSfunc rsAgeEval: spf(10) * spf(20) - log(10) = 61+1 off-by-one BARSfunc rsAgeEval: spf(20)! / spf(10)! - 10 = 61+1 * RoadHacker was 61 years young when he found this road sign.

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

**Created:** 12 July 2018

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