| ||||
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Cardinal | two hundred forty-one | |||
Ordinal | 241st (two hundred forty-first) | |||
Factorization | prime | |||
Prime | twin prime | |||
Greek numeral | ΣΜΑ´ | |||
Roman numeral | CCXLI | |||
Binary | 111100012 | |||
Ternary | 222213 | |||
Senary | 10416 | |||
Octal | 3618 | |||
Duodecimal | 18112 | |||
Hexadecimal | F116 |
241 (two hundred [and] forty-one) is the natural number between 240 and 242. It is also a prime number.
241 is the larger of the twin primes (239, 241). Twin primes are pairs of primes separated by 2.
241 is a regular prime[1] and a lucky prime.[2]
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).
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Transcription
References
- ^ "Sloane's A007703 : Regular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A031157 : Numbers that are both lucky and prime". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.