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53 (number) at opensource encyclopedia (Site not responding. Last check: 2007-11-06) |
 | | 53 is the natural number following 52 and preceding 54. |
| | Fifty-three is also a Sophie Germain prime, and the sum of five consecutive primes (5 + 7 + 11 + 13 + 17). |
| | 53 written in hexadecimal is 35, that is, the same characters used in the decimal representation, but reversed. |
| www.wiki.tatet.com /53_(number).html (150 words) |
