It took @mathbabbler 509 days to tweet one kilotweet. While in the process of creating a nBAB for 509, MathBabbler learned that 509 was a

Truman Gerald Pairwith`.`

479MathBabbler Number Analyst (MBNA) output: ========================================= 479 is a natural, whole, integer 479 is odd 479 proper divisors are: 1, 479 is deficient (sum of divisors is 1) 479 is unhappy 479 is not a Harshad number 479 is prime ...Safe prime with 239 ...Truman Gerald prime with 509 ...Truman Gerald prime with 449 ...OEIS:002145 (4n+3; n=119) ...Left-truncatable ...Right-truncatable ...Eisenstein 479 is ThurmNumber 479 is the sum of 9 consecutive primes 479 = 37 + 41 + 43 + 47 + 53 + 59 + 61 + 67 + 71 479 in octal is 0737 479 in hexadecimal is 0x1df 479 in binary is 111011111 (is evil) 479 nearest square numbers: -38...5 (441...484 [22]) sqrt(479) = 21.8861 ln(479) = 6.1717 log(479) = 2.68034 479 reciprocal is .00208768267223382045929018789144 479! is 3.9173e+1077 479 is 152.47 Pi years 479 is 23 score and 19 years 479 written as a Roman numeral is CDLXXIX 479 = 240^2 - 239^2 and 240 + 239 = 479

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

**Created:** 31 October 2010

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