This road sign was seen on a Thriller TV show. The road sign was (is) in California.

```   +--------------------+
| Solana Beach     1 |
| Oceanside       17 |
| Los Angeles    105 |
+--------------------+
```
```   the numbers are:  1  17  105

rsCardinalityEval:  1 * (105 % 17) = 3
* There are three numbers is this road sign.

... BARSfunc playground ...

105 is a composite number

spf(105) = 3+5+7 = 15
* spf(n) = the sum of the prime factors of n
domain: n must be a composite number

spd(105) = 1+3+5+7+15+21+35 = 87
* spd(n) = the sum of the proper divisors of n
domain: n must be a composite number

17 is a prime number

reverse_digits(17) = 71  [note: 71 is prime]
* reverse_digits(n) = the digits of n reversed
domain:  n must be a prime number

mult_digits(17) = 1*7 = 7
* mult_digits(n) = product of the digits of n
domain:  n must be a prime number

sum_digits(17) = 1+7 = 8
* sum_digits(n) = sum the digits of n
domain:  n must be a prime number

BARSfunc rsStateEval:  spf(105) + 17 - 1 = 31
* California was the 31st state admitted to the Union.
sum_digits(17) =

BARSfunc math:  105 % sum_digits(17) = 1

BARSfunc math:  (105 % mult_digits(17))! = 1

off-by-one BARSfunc math:  17 - 1 = spf(105)+1
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 16 July 2014