This road sign is on northbound US Hwy-191/US Hwy-180 in Arizona.

The road sign says...

+-------------------+ | St. Johns 25 | | Sanders 78 | | Holbrook 88 | +-------------------+the numbers are: 25 78 88 the rsHwyEval is: 25 + 78 + 88 = 191 * this road sign is on US Hwy-191 off-by-one rsAgeEval: sqrt(25) * (88 - 78) = 50 * RoadHacker was 50+1 years young when found this signThe road sign is encountered immediately after turning north onto US Hwy-191 from US Hwy-60. This stretch of US Hwy-191 is also US Hwy-180. Bablylonians used the base-60 (hexasegimal) number system.

the numbers are: 25 78 88 2nd rsHwyEval is: sqrt(25)! + (88 - 78)_{60}= 180 * this road sign is on US Hwy-180 observe... sqrt(25) = 5 5! = 5 * 4 * 3 * 2 * 1 = 120 88 - 78 = 10 10 in base-60 is 60The base-5 (quinary) number system is often called the "Hand" number system.

the numbers are: 25 78 88 the base-5 math is: sqrt(25) = (88 - 78)_{5}observe... 10 in base-5 is 5## Update::2010.01.29

This BARS was selected to be one of the BARS of the Week for week #3 of the spring 2010 semester.

the numbers are: 25 78 88 off-by-one rsTweetLenEval: 88 + 78 - 25 = 140 + 1 * 140 is the maximum length of a Twitter posting (tweet). 78, 88, 25 are composite numbers; therefore, they are all in the domain (i.e. can be used as input to) the spf(n) function. BARSfunc math: spf(78) - spf(88) = log(spf(25)) * spf(n) = the sum of the prime factors of n * spf(78) = 2+3+13 = 18; spf(88) = 2+2+2+11 = 17; spf(25) = 5+5 = 10 * 18 - 17 = 10; log(10) = 1 [log(n) defaults to base-10]

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

**Created:** 29 September 2008

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