### BARS::Hudson Neighborhood Reserved Parking in Tempe, Arizona

This reserved parking sign is in Tempe, Arizona.

The parking sign says...

```+------------------+
|   Starts Here    |
| Reserved Parking |
|     Area 13      |
| Resident Permit  |
|  Parking Only    |
|     24 Hour      |
|  7 Days a Week   |
| Except Holidays  |
+------------------+
```
```   the numbers are:  13  24  7

rs42Eval:  cuberoot(1324)! * 7 = 42
* 42 is the "Answer to Life, the Universe, and Everything"

rs37Eval:  2413 + 7 = 37
* Why rs37Eval? 37 Heaven @ http://thirty-seven.org

...BARS functions...
* reverse_digits(n) = the digits of n reversed
domain:  n must be a prime number
* sum_digits(n) = sum the digits of n
domain:  n must be a prime number
* mult_digits(n) = product of the digits of n
domain:  n must be a prime number
* spf(n) = the sum of the prime factors of n
domain: n must be a composite number

* 13 is prime
reverse_digits(13) = 31  (note 31 is prime)
sum_digits(13) = 1+3 = 4
mult_digits(13) = 1*3 = 3
* 24 is composite
spf(24) = 2+2+2+3 = 9

BARSfunc math:  13 -  7 = sqrt(spf(24))!
BARSfunc math:  24 % 7 = mult_digits(13)
BARSfunc math:  reverse_digits(13) - 7 = 24
BARSfunc math:  13 - 7 = spf(spf(24))
* spf(24) = 9; spf(9) = 3+3 = 6

BARSfunc rsStateEval:  sqrt(17 - mult_digits(13)) * 24 = 48
* Arizona was the 48th state admitted to the Union.

BARSfunc rs42Eval:  mult_digits(13 * 7 - 24) = 42
* 42 is the "Answer to Life, the Universe, and Everything"
* 67 is prime; mult_digits(67) = 6*7 = 42

BARSfunc rs37Eval:  7 + 24 + mult_digits(13)! = 37
* Why rs37Eval? 37 Heaven @ http://thirty-seven.org

BARSfunc rsPiEval:  (13 + spf(24)) / 7 = Pi
* 22/7 approximates Pi rounded to nearest hundredth (3.14)
* Pi ~= 3.1415926535897932384626

BARSfunc rsCardinalityEval:  spf(24) + 7 - 13 = 3
* There are 3 numbers in this reserved parking sign.
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 09 May 2016 