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From Wikipedia, the free encyclopedia

241 (two hundred [and] forty-one) 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[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).

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.

See also

References

  1. ^ "Sloane's A007703 : Regular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. ^ "Sloane's A031157 : Numbers that are both lucky and prime". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
This page was last edited on 16 February 2019, at 13:06
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