BARS::39 Miles From Jct. 86 on CA Hwy-78 in California

This road sign is on CA Hwy-78 in California.

The road sign says...

   +----------------------+
   | Ocotillo Wells    22 |
   | Junction 86       39 |
   | Brawley           62 |
   +----------------------+

To date, MathBabbler has not found any math in this road sign; therefore, he resorted to using the spf(n) function to morph numbers. [The spf(n) function outputs the sum of the prime factors for the input.]

   the numbers are:  22  39  62  86

   the math is:  86 - 22 - 62 = sqrt(sqrt(spf(39)))

   observe...
      86 - 22 = 64
      64 - 62 = 2
      spf(39) = 3 + 13 = 16
      sqrt(16) = 4
      sqrt(4) = 2

All four numbers found in this road sign each have only two prime factors.

   prime_factors(22) = 2 * 11
   prime_factors(39) = 3 * 13
   prime_factors(62) = 2 * 31
   prime_factors(86) = 2 * 43

   using the smallest prime factors for each number on the
   left-side of the equation and the largest prime factors
   for each number on the right-side of the equation...

   2 * 3 * 2 * 2 = (13 - 11) * (43 - 31)

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 21 December 2007

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