This road sign is on westbound I-8 in Arizona.

Note: MathBabbler copied the picture of this road from from Michael Cady's Facebook account. Cady "owns a computer store, hosts a talk radio program, lives and plays in 'old-town' Scottsdale [Arizona]."

The road sign says...

+--------------------------+ | Foothills Blvd 5 | | Yuma 19 | | San Diego 196 | +--------------------------+the numbers are: 5 19 196 the math is: 19 - 5 = sqrt(196) more math: 19 % sqrt(196) = 5 rsHwyEval: sqrt(196) - 5! % 19 = 8 * This road sign was found on I-8 BARSfunc rsHwyEval: spf(196 - summation(5, 19)) = 8 * This road sign was found on I-8 observe... summation(5, 19) = 5+6+7+...+17+18+19 = 180 spf(n) = the sum of the prime factors of n spf(196 - 180) = spf(16) = 2+2+2+2 = 8 rsDupEval: summation(5, sqrt(196)) = dup(5) * 19 observe... dup(5) = 5 summation(5, sqrt(196)) = summation(5, 14) = 5+6+7+...+12+13+14 = 95

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

**Created:** 21 July 2009

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