199 (number)
| |||
|---|---|---|---|
| Cardinal | one hundred ninety-nine | ||
| Ordinal | 199th (one hundred ninety-ninth) | ||
| Factorization | prime | ||
| Prime | 46th | ||
| Greek numeral | ΡϞΘ´ | ||
| Roman numeral | CXCIX, cxcix | ||
| Binary | 110001112 | ||
| Ternary | 211013 | ||
| Senary | 5316 | ||
| Octal | 3078 | ||
| Duodecimal | 14712 | ||
| Hexadecimal | C716 |
199 (one hundred [and] ninety-nine) is the natural number following 198 and preceding 200.
In mathematics
[edit]It is a prime number and the fourth part of a prime quadruplet: 191, 193, 197, 199.[1]
199 is the smallest natural number that takes more than two iterations to compute its digital root as a repeated digit sum:
Thus, its additive persistence is three, and it is the smallest number of persistence three.[2]
See also
[edit]References
[edit]- ^ Sloane, N. J. A. (ed.). "Sequence A136162 (List of prime quadruplets)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A006050 (Smallest number of additive persistence n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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