This road sign is on eastbound Route 66 in Seligman, Arizona.

The road sign says...

+----------------+ | Ash Fork 23 | | Flagstaff 73 | +----------------+the numbers are: 23 73 rsAgeEval: 73 - 23 = 50 * RoadHacker was 50 years young when he found this sign. off-by-one-percent rsPiEval: 73/23 = 3.17391304 Pi = 3.14159265 73/23 - Pi = 0.0323203899 73/23 is 1.03% greater than Pi 73/23 is 1.02% less than Pi[side-bar] RoadHacker encountered this road sign at 4:24am while looking for coffee (un-successfully) in Seligman, Arizona. The road sign was found on 27 May 2008; RoadHacker's last day being 50 years young.

## Update::2008.11.14

This BARS was updated because it was used as one of the BARS-of-the-Week for week 13 of the fall 2008 semester.

observe... 23 and 73 are both prime numbers 23 and 73 are both right-truncatable because their right-most digits can be truncated and the resulting numbers (2 and 7) are also prime 23 and 73 are both left-truncatable because their left-most digits can be truncated and the resulting numbers (3 and 3) are also prime 73 is a "permutable prime" because reversing the digits results in another prime number (37)

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

**Created:** 28 May 2008

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+ This was BAB #1591 and BARS #433.
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