309 (number)
309 or three hundred nine is the natural number following 308 and preceding 310.
| ||||
---|---|---|---|---|
Cardinal | three hundred nine | |||
Ordinal | 309th (three hundred ninth) | |||
Factorization | 1033 | |||
Divisors | 1, 3, 103, 309 | |||
Greek numeral | ΤΘ´ | |||
Roman numeral | CCCIX | |||
Binary | 1001101012 | |||
Ternary | 1021103 | |||
Senary | 12336 | |||
Octal | 4658 | |||
Duodecimal | 21912 | |||
Hexadecimal | 13516 |
In mathematics
- 309 is an odd composite number.[1]
- 309 is composed of two distinct prime numbers multiplied. (103 and 3)[1]
- 309 is a Blum integer.[2]
- 309 is a centered icosahedral number.[3]
- Up until April 2024, 309 was the smallest number to not have a Wikipedia article. Due to this, it was potentially classified as an uninteresting number according to the interesting number paradox.[citation needed]
References
- ^ a b "Numbermatics: The Number Explorer". Numbermatics. Apr 30, 2024. Retrieved Apr 30, 2024.
- ^ "Blum Number". PlanetMath. Apr 30, 2024. Retrieved Apr 30, 2024.
- ^ Sloane, N. J. A. (May 1, 2024). "The On-Line Encyclopedia of Integer Sequences". OEIS. Retrieved May 1, 2024.