It took @mathbabbler

`days to tweet one kilotweet.`

509MathBabbler Number Analyst (MBNA) output: ========================================= 509 is a natural, whole, integer 509 is odd 509 proper divisors are: 1, 509 is deficient (sum of divisors is 1) 509 is unhappy 509 is not a Harshad number 509 is prime ...Sexy prime with 503 ...Sophie Germain prime with 1019 ...Truman Gerald prime with 479 ...Pythagorean ...Super ...Eisenstein 509 in octal is 0775 509 in hexadecimal is 0x1fd 509 in binary is 111111101 (is evil) 509 nearest square numbers: -25...20 (484...529 [23]) sqrt(509) = 22.561 ln(509) = 6.23245 log(509) = 2.70672 509 reciprocal is .00196463654223968565815324165029 509! is 2.60603e+1158 509 is 162.02 Pi years 509 is 25 score and 9 years 509 written as a Roman numeral is DIX 509 = 255^2 - 254^2 and 255 + 254 = 509

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

**Created:** 30 October 2010

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