241 (number)
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|---|---|---|---|---|
| Cardinal | two hundred forty-one | |||
| Ordinal | 241st (two hundred and forty-first) |
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| Factorization | 241 | |||
| Prime | twin prime | |||
| Roman numeral | CCXLI | |||
| Binary | 111100012 | |||
| Ternary | 222213 | |||
| Quaternary | 33014 | |||
| Quinary | 14315 | |||
| Senary | 10416 | |||
| Octal | 3618 | |||
| Duodecimal | 18112 | |||
| Hexadecimal | F116 | |||
| Vigesimal | C120 | |||
| Base 36 | 6P36 | |||
241 is the natural number between 240 and 242. It is also a prime number.
In mathematics
241 is the larger of the twin primes (239, 241). Twin primes are pairs of primes separated by 2.
241 is a regular prime and a lucky prime.
Since 241 = 15 × 24 + 1, it is a Proth prime.
241 is a repdigit in base 15 (111).
241 is the only known Lucas–Wieferich prime to (U, V) = (3, −1).
In Chemistry
Americium-241 is the most common isotope of Americium, used in smoke detectors
In popular culture
- Reel Big Fish wrote a song entitled "241," where the number is repeated as the only lyric.
- A short form of the phrase "Two for One" describing a discount.
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