219 (number)
| ||||
|---|---|---|---|---|
| Cardinal | two hundred nineteen | |||
| Ordinal |
219th (two hundred and nineteenth) | |||
| Factorization | 3 × 73 | |||
| Roman numeral | CCXIX | |||
| Binary | 110110112 | |||
| Ternary | 220103 | |||
| Quaternary | 31234 | |||
| Quinary | 13345 | |||
| Senary | 10036 | |||
| Octal | 3338 | |||
| Duodecimal | 16312 | |||
| Hexadecimal | DB16 | |||
| Vigesimal | AJ20 | |||
| Base 36 | 6336 | |||
219 (two hundred [and] nineteen) is the natural number following 218 and preceding 220.
Mathematics
- 219 is a happy number.[1]
- Mertens function(219) = 4, a record high.[2]
- There are 219 partially ordered sets on four labeled elements.[3]
- 219 is the smallest number that can be represented as a sum of four positive cubes in two different ways.[4]
- There are 219 different space groups, discrete and full-dimensional sets of symmetries of three-dimensional space or of crystal structures.
See also
- The years 219 and 219 BC
- .219 Zipper and .219 Donaldson Wasp, rifle cartridges
- 219 Days, a music album
- Case 219, a film
- Substation 219, a historic building in Harlem, New York
- List of highways numbered 219
References
- ↑ "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A051400 : Smallest value of x such that M(x)=n, where M() is Mertens's function". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A001035 : Number of partially ordered sets ("posets") with n labeled elements (or labeled acyclic transitive digraphs)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Sloane's A025420 : Least sum of 4 positive cubes in exactly n ways". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation..
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