### BARS::17 Miles From Why and 71 Miles From Gila Bend in Arizona

This road sign is on AZ Hwy-85 in Arizona.

```   +------------------+
| Why           17 |
| Gila Bend     71 |
+------------------+
```
```   the numbers are:  17   71

AllPrimesRS:  17 and 71 are both numbers. In addition,
17 and 71 are a "reversible prime pair."

rsAgeEval:  71 - 17 = 54
* RoadHacker was 54 years young when he found this road sign.

off-by-one rsCardinalityEval:  71 % 17 = 2+1
* There are two numbers this road sign.

From the BARSfuncLib...
* mult_digits(n) = product of the digits of n
domain:  n must be a prime number
* sum_digits(n) = sum the digits of n
domain:  n must be a prime number
* reverse_digits(n) = the digits of n reversed
* domain: n must be a prime number

BARSfunc math:  reverse_digits(17) = 71
reverse_digits(71) = 71

BARSfunc rsCardinalityEval:  cuberoot(sum_digits(17)!/mult_digits(71)!) = 2
BARSfunc off-by-one rsStateEval:  mult_digits(17) * mult_digits(71) = 48+1
* Arizona was the 48th state admitted to the Union.
```

```