| Base 10 | 991 (3 digits) | ||
| Digit Sum: 19 | Digital Root: 1 | sad | |
| Base 2 | 0b1111011111 (10 digits) | ||
| Digit Sum: 0b1001 | Digital Root: 0b1 | always happy | |
| Base 8 | 01737 (4 digits) | ||
| Digit Sum: 022 | Digital Root: 04 | sad | |
| Base 16 | 0x3df (3 digits) | ||
| Digit Sum: 0x1f | Digital Root: 0x1 | sad | |
More about this number at Positiv Integers and Number Empire.
The number is a prime
It is a Sexy prime for 997.
| In HTML this number represents this color: |
⇧↑⇧↑⇧↑ #0003DF ⇩↓⇩↓⇩↓ |
As Unicode codepoint (since version 3.0) this number represents this character:ϟ GREEK SMALL LETTER KOPPA in Greek (Source: https://ucdapi.org/unicode/latest/codepoint/dec/991); HTML: ϟ
In the work of Johann Sebastian Bach BWV 991 is Air mit Variationen in c (Fragment)
The number appears at position 1532 of the decimal digits of π surrounded by
7202755960236480665499119881834797753566369 Source: The Pi-Search Page
Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 977.415ms; cpu: 96.0150000000013ms)