BARS::5 Miles From Terlingua in Southwest Texas

This road sign in on TX Hwy-170 in southwest Texas. [Note: This sign was seen while watching National Geographic's "Badlands, Texas" documentary.]

The road sign says...

   +--------------------------+
   | Terlingua Ghost Town   5 |
   | Lajitas               17 |
   | Presidio              67 |
   +--------------------------+
   the numbers are:  5  17  67

   primeRS:  all three numbers are prime numbers

   rsHwyEval:  5! + 67 - 17 = 170
   * This road sign is on TX Hwy-170.

   rsCardinalityEval:  5 - sqrt(sqrt(67 % 17)) = 3
   * There are three numbers in this road sign.

   off-by-one math:  sqrt(67 % 17) = 5-1

   ... BARSfunctions having prime number domains ...

   * reverse_digits(n) = the digits of n reversed
   * mult_digits(n) = product of the digits of n
   * sum_digits(n) = sum the digits of n

   * 67 is prime; reverse_digits(67) = 76
                  sum_digits(67) = 6+7 = 13
                  mult_digits(67) = 6*7 = 42
   * 17 is prime; reverse_digits(17) = 71
                  sum_digits(17) = 1+7 = 8
                  mult_digits(17) = 1*7 = 7

   BARSfunc math:  reverse_digits(67) - reverse_digits(17) = 5
   BARSfunc math:  sum_digits(67) - sum_digits(17) = 5
   BARSfunc off-by-one math:  reverse_digits(17) - 67 = 5-1

   BARSfunc rs42Eval:  sqrt(mult_digits(67)^(17 % 5)) = 42
   * 42 is the "Answer to Life, the Universe, and Everything"

   BARSfunc rsCardinalityEval:  cuberoot(67 - sum_digits(17) * 5) = 3
   * There are three numbers in this road sign.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 08 February 2016

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