200 (number)
From Wikipedia, the free encyclopedia
200 (two hundred) is the natural number following 199 and preceding 201. Roman numerals: CC
| Cardinal | 200 two hundred |
| Ordinal | 200th two hundredth |
| Factorization |  |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200 |
| Roman numeral | CC |
| Roman numeral (Unicode) | CC, cc |
| Binary | 11001000 |
| Octal | 310 |
| Duodecimal | 148 |
| Hexadecimal | C8 |
| Hebrew | ר (Resh) |
The number appears in the Padovan sequence, preceded by 86, 114, 151 (it is the sum of the first two of these).
The sum of Euler's totient function φ(x) over the first twenty-five integers is 200.
200 is the smallest base 10 unprimeable number - it can not be turned into a prime number by changing just one of its digits to any other digit. It is also a Harshad number.
Two hundred is also:
- A common ISO-standard film speed for photographic films. However, 200 speed film is being phased out in consumer films in favor of faster films.
- A denomination of the euro note. The 200 euro note was designed by Robert Kalina.
- The size of one side of the main square in Kraków, Poland (200 m×200 m)
- 200 MeV is the temperature of quark-gluon plasma phase transition.
- The name of a car made by the Rover Group — the Rover 200.
- An HTTP status code indicating a successful connection.
- The sum of dollars given in the classical Monopoly game to a player passing Go.
- A cholesterol level of 200 and below is considered "Desirable level corresponding to lower risk for heart disease"
- "200" is the title of an episode of the television show Stargate SG-1.
- The number of NASCAR races won by Richard Petty.
- A Year.
[edit] Other numbers in the 200s
[edit] 201-209
201 = 3·67, Blum integer, Harshad number, also HTTP status code indicating success of a POST command, with the textual part of the response line indicating the URI by which the newly created document should be known. Also, the title of the Star Trek: The Next Generation episode "11001001".
202 = 2·101, sum of four consecutive primes (43 + 47 + 53 + 59), Smith number, nontotient, noncototient; also HTTP status code meaning the request was accepted but has not yet been fulfilled; also the E number of the preservative potassium sorbate.
203 = 7·29, 6th Bell number, also HTTP status code indicating partial information.
204 = 22·3·17, sum of a twin prime (101 + 103), sum of six consecutive primes (23 + 29 + 31 + 37 + 41 + 43), refactorable number, nonagonal number, square pyramidal number (sum of the first eight squares), member of Mian-Chowla sequence, Harshad number, also HTTP status code indicating the request was received but there is no response to the request
205 = 5·41
206 = 2·103, nontotient, noncototient, untouchable number. Also, the number of bones in a normal human skeleton according to Gray's Anatomy. 'Two hundred and six' is the lowest positive integer (when written in English) to employ all of the vowels once only. The other numbers sharing this property are 230, 250, 260, 602, 640, 5000, 8000, 9000, 80,000 and 90,000.
207 = 32·23, Wedderburn-Etherington number, Harshad number
208 = 24·13, tetranacci number, sum of the squares of the first five primes
208 is the heaviest stable isotope of any element (lead). But see bismuth Also normally in a human body there are 208 to 214 bones.
208 meters was the wavelength of Radio Luxembourg from 1951 to 1991.
209 = 11·19, Blum integer, highly cototient number, Harshad number, self number
