This road sign is on northbound AZ Hwy-77 in Winkelman, Arizona.

The road sign says...

+-------------------+ | Jct U.S. 70 36 | | Globe 39 | +-------------------+This is the first BARS to use the spf function (sum of the prime factors).

the numbers are: 70 36 39 the math is: spf(70) - sqrt(spf(39)) = spf(36) spf(70) = 14 (prime factors for 70: 2, 5, 7) spf(39) = 16 (prime factors for 39: 3, 13) spf(36) = 10 (prime factors for 36: 2, 2, 3, 3)## Related BARS

- AZ Hwy-77 Road Signs Merged at Winkelman, Arizona
- Truncation Used on an AZ Hwy-77 Road Sign in Winkelman, Arizona
## Update::2008.05.16

On 1 May 2008, MathBabbler wrote this C++ program to convert a string into a number. The program converts the string into the digits that MathBabbler needs to press on his cell phone in order to send the string as a text message. The number of the string-to-number conversion is the sum of the digits digits needed to send to enter the string as a text message.

jct: 52228 (sums to 19) u.s.: 887777 (sums to 65) globe: 45556662233 (sums to 47)the numbers become: 70 36 39 19 65 47 the math is: (47 - (39 - 36)) / (19 - (70 - 65)) = Pi observe... numerator: 39 - 36 = 3 47 - 3 = 44 denominator: 70 - 65 = 5 19 - 5 = 14 44 / 14 approximates Pi (3.14)## Update::2013.03.22

RoadHacker encountered this road sign again on 15 March 2013 as part of his Pi Day 2013 road trip.

the numbers are: 70 36 39 rs37Eval: 70 - 39 + sqrt(36) = 37 * Whyrs37Eval? 37 Heaven @ http://thirty-seven.org off-by-one rs42Eval: 70 % sqrt(36) + 39 = 42+1 * 42 is the "Answer to Life, the Universe, and Everything" off-by-one rs42Eval: sqrt(70 % sqrt(36)) + 39 = 42-1 * 42 is the "Answer to Life, the Universe, and Everything" off-by-one rsCardinality: 70 % (39 % sqrt(36))! = 3+1 * There are three numbers in this road sign.

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 26 November 2007

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