200 (number)
200 (two hundred) is the natural number following 199 and preceding 201.
| Cardinal | 200 two hundred |
| Ordinal | 200th two hundredth |
| Factorization | <math>2^3 \cdot 5^2</math> |
| 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 Krakow, Poland (200 m×200 m)
- 200 MeV is the temperature of quark-gluon plasma phrase transition
- 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"
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Other numbers in the 200s
201-209
Two hundred and one 201 = 3·67, 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", also the area code for northern New Jersey.
Two hundred and two 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 telephone area code for District of Columbia.
Two hundred three 203 = 7·29, 6th Bell number, also HTTP status code indicating partial information, also the area code for Southwest Connecticut - Fairfield & New Haven counties.
Two hundred four 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), Harshad number, also HTTP status code indicating the request was received but there is no response to the request, also telephone area code for Manitoba
Two hundred five 205 = 5·41, also spur routes of Interstate 5, also the area code for northern Alabama.
Two hundred six 206 = 2·103, nontotient, noncototient, untouchable number, also the area code for Seattle, Washington. 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.
Two hundred seven 207 = 32·23, Wedderburn-Etherington number, Harshad number, also telephone area code for Maine
Two hundred eight 208 = 24·13, tetranacci number, sum of the squares of the first five primes, also telephone area code for Idaho
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.
Two hundred nine 209 = 11·19, highly cototient number, Harshad number, self number, also the area code for Modesto, California.
210-299
See 210 220 230 240 250 260 270 280 290
en:200 (szám)