199 (number)
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Revision as of 11:15, 1 August 2022 by imported>John Marlo (add)
Short description: Natural number
| ||||
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Cardinal | one hundred ninety-nine | |||
Ordinal | 199th (one hundred ninety-ninth) | |||
Factorization | prime | |||
Prime | 46th | |||
Greek numeral | ΡϞΘ´ | |||
Roman numeral | CXCIX | |||
Binary | 110001112 | |||
Ternary | 211013 | |||
Quaternary | 30134 | |||
Quinary | 12445 | |||
Senary | 5316 | |||
Octal | 3078 | |||
Duodecimal | 14712 | |||
Hexadecimal | C716 | |||
Vigesimal | 9J20 | |||
Base 36 | 5J36 |
199 (one hundred [and] ninety-nine) is the natural number following 198 and preceding 200.
In mathematics
199 is a centered triangular number.[1]
It is a prime number and the fourth part of a prime quadruplet: 191, 193, 197, 199.[2]
199 is the smallest natural number that takes more than two iterations to compute its digital root as a repeated digit sum: [math]\displaystyle{ \begin{align} 199&\mapsto 1+9+9=19\\ &\mapsto 1+9=10\\ &\mapsto 1+0=1. \end{align} }[/math] Thus, its additive persistence is three, and it is the smallest number of persistence three.[3]
See also
- The year AD 199 or 199 BC
- List of highways numbered 199
- All pages with titles containing 199
References
- ↑ Sloane, N. J. A., ed. "Sequence A005448 (Centered triangular numbers)". OEIS Foundation. https://oeis.org/A005448.
- ↑ Sloane, N. J. A., ed. "Sequence A136162 (List of prime quadruplets)". OEIS Foundation. https://oeis.org/A136162.
- ↑ Sloane, N. J. A., ed. "Sequence A006050 (Smallest number of additive persistence n)". OEIS Foundation. https://oeis.org/A006050.
![]() | Original source: https://en.wikipedia.org/wiki/199 (number).
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