On 22 November 2008, MathBabbler discovered this I-43 highway sign while on a bike ride in his Tempe neighborhood.

MathBabbler Number Analyst (MBNA) output: ========================================= 43 is a natural, whole, integer 43 is odd 43 is unhappy 43 is not a Harshad number 43 is prime ...Cousin prime with 47 ...Sexy prime with 37 ...Twin prime with 41 ...OEIS:002145 (4n+3; n=10) ...Left-truncatable ...prime triplet {37, 41, 43} ...prime triplet {41, 43, 47} 43 is undulating 43 in octal is 053 43 in hexadecimal is 0x2b 43 in binary is 101011 (is evil) 43 nearest square numbers: -7...6 (36 [6]...49 [7]) sqrt(43) = 6.55744 ln(43) = 3.7612 log(43) = 1.63347 43 reciprocal is .02325581395348837209302325581395 43! is 6.04153e+52 43 is 13.6873 Pi years 43 is 2 score and 3 years

`written as a Roman numeral is`

43`.`

XLIIIThe Wikipedia says Pink Floyd's "Dark Side of the Moon" is exactly

`minutes long.`

43This nBAB was created while George W. Bush, president number

`, was President of the United States.`

43MathBabbler wore number

`when he played basketball at Romeoville High School in Illinois.`

43Added a song titled

`by Mushroomhead to Songs With Numbers in Their Titles.`

43## Update::2009.01.19

The Arizona Cardinals won the NFC Championship and they play the Pittsburgh Steelers in Super Bowl XLIII (

`).`

43

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

**Created:** 23 November 2008 (nBAB# 75; BAB# 1923)

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