200 (number)
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Cardinal | two hundred | |||
Ordinal | 200th (two hundredth) | |||
Factorization | 23 × 52 | |||
Divisors | 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200 | |||
Greek numeral | Σ´ | |||
Roman numeral | CC | |||
Binary | 110010002 | |||
Ternary | 211023 | |||
Senary | 5326 | |||
Octal | 3108 | |||
Duodecimal | 14812 | |||
Hexadecimal | C816 | |||
Armenian | Մ | |||
Hebrew | ר | |||
Babylonian cuneiform | 𒐗⟪ | |||
Egyptian hieroglyph | 𓍣 |
200 (two hundred) is the natural number following 199 and preceding 201.
In mathematics
[edit]200 is an abundant number, as 265, the sum of its proper divisors, is greater than itself.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Nr-200_Nikon_D200_Belt-DSC_4110.jpg/220px-Nr-200_Nikon_D200_Belt-DSC_4110.jpg)
The number appears in the Padovan sequence, preceded by 86, 114, 151 (it is the sum of the first two of these).[1]
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 cannot be turned into a prime number by changing just one of its digits to any other digit. It is also a Harshad number.
200 is an Achilles number.[2]
In science
[edit]200 MeV is the temperature of quark–gluon plasma phase transition.
References
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up two hundred in Wiktionary, the free dictionary.
- ^ "Sloane's A000931 : Padovan sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ Sloane, N. J. A. (ed.). "Sequence A052486 (Achilles numbers - powerful but imperfect: if n = Product(p_i^e_i) then all e_i > 1 (i.e., powerful), but the highest common factor of the e_i is 1, i.e., not a perfect power)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.