These street signs are in Earth, Texas.

The street signs say...

+------------------+ | E 1st 100 St | | N Amherst 200 Rd | +------------------+the numbers are: 1 100 200 the math is: log(sqrt(200 - 100)) = 1 off-by-one math: 200 / 100 = 1 + 1 BARSfunc math: sqrt(sqrt(spf(200))) = 1 + log(sqrt(100)) * spf(n) = the sum of the prime factors of n * spf(200) = 2 + 2 + 2 + 5 + 5 = 16 * sqrt(16) = 4; sqrt(4) = 2 * sqrt(100) = 10; log(10) = 1## Update::2009.09.20

MathBabbler was adding exercises to nBABs about the numbers 1109 (Earth's population) and 79031 (Earth's zip code) and that prompted him to re-visit this BARS using street signs from Earth.

the numbers are: 1 100 200 BARSfunc math: log(spf(100) - sqrt(spf(200))) = 1 * spf(n) = the sum of the prime factors of n * spf(100) = 2 + 2 + 5 + 5 = 14 * spf(200) = 2 + 2 + 2 + 5 + 5 = 16; sqrt(16) = 4 * 14 - 4 = 10; log(10) = 1 number system off-by-one rsAgeEval: 200 / 100_{2}+ 1 = 52 - 1 * MathBabbler was 52 years young when he found this equation and RoadHacker was 52 years young when he found these street signs. * check w/Wolfram|Alpha [exercise] 100_{2}= ______

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

**Created:** 04 July 2009

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