MathBabbler is nanofoo on Twitter. On 11 June 2009, nanofoo made his 400th tweet (Twitter posting). Nanofoo's first Twitter posting was on 18 October 2007. In other words, it took nanofoo

`days to post 400 tweets.`

602Note:

`is an area code with 577 exchanges (including 314 and 272) in Arizona.`

602MathBabbler Number Analyst (MBNA) output: ========================================= 602 is a natural, whole, integer 602 is even 602 proper divisors are: 1,2,7,14,43,86,301, 602 is deficient (sum of divisors is 454) 602 is unhappy 602 is not a Harshad number 602 is not prime 602 has the prime factors: 2*7*43 (sum=52) 602 is sphenic (had 3 unique prime factors) 602 sum of prime factors is: 52 602 in octal is 01132 602 in hexadecimal is 0x25a 602 in binary is 1001011010 (is odious) 602 nearest square numbers: -26...23 (576...625 [25]) sqrt(602) = 24.5357 ln(602) = 6.40026 log(602) = 2.7796 602 reciprocal is .00166112956810631229235880398671 602! is 4.57887e+1413 602 is 191.623 Pi years 602 is 30 score and 2 years 602 written as a Roman numeral is DCIINumberGossip.com reported that

`is a`

602Ulamnumber.[source: OEIS.org] Ulam numbers: a(1) = 1; a(2) = 2; for n>2, a(n) = least number > a(n-1) which is a unique sum of two distinct earlier terms. 1, 2, 3, 4, 6, 8, 11, 13, 16, 18, 26, 28, 36, 38, 47, 48, 53, 57, 62, 69, 72, 77, 82, 87, 97, 99, 102, 106, 114, 126, 131, 138, 145, 148, 155, 175, 177, 180, 182, 189, 197, 206, 209, 219, 221, 236, 238, 241, 243, 253, 258, 260, 273, 282, 309, 316, 319, 324, 339, ...OEIS.org::id:A002858

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

**Created:** 10 June 2009

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