| ||||
|---|---|---|---|---|
| Cardinal | forty-one | |||
| Ordinal | 41st (forty-first) | |||
| Factorization | prime | |||
| Prime | 13th | |||
| Divisors | 1, 41 | |||
| Greek numeral | ΜΑ´ | |||
| Roman numeral | XLI | |||
| Binary | 1010012 | |||
| Ternary | 11123 | |||
| Senary | 1056 | |||
| Octal | 518 | |||
| Duodecimal | 3512 | |||
| Hexadecimal | 2916 | |||
41 (forty-one) is the natural number following 40 and preceding 42.
In mathematics[edit]
- the 13th smallest prime number. The next is 43, making both twin primes.
- the sum of the first six prime numbers (2 + 3 + 5 + 7 + 11 + 13).
- the 12th supersingular prime[1]
- a Newman–Shanks–Williams prime.[2]
- the smallest Sophie Germain prime to start a Cunningham chain of the first kind of three terms, {41, 83, 167}.
- an Eisenstein prime, with no imaginary part and real part of the form 3n − 1.
- a Proth prime as it is 5 × 23 + 1.[3]
- the largest lucky number of Euler: the polynomial f(k) = k2 − k + 41 yields primes for all the integers k with 1 ≤ k < 41.
- the sum of two squares (42 + 52), which makes it a centered square number.[4]
- the sum of the first three Mersenne primes, 3, 7, 31.[5]
- the sum of the sum of the divisors of the first 7 positive integers.
- the smallest integer whose reciprocal has a 5-digit repetend. That is a consequence of the fact that 41 is a factor of 99999.
- the smallest integer whose square root has a continued fraction with period 3.[6]
- a prime index prime, as 13 is prime.
In science[edit]
- The atomic number of niobium.
In astronomy[edit]
- Messier object M41, a magnitude 5.0 open cluster in the constellation Canis Major.
- The New General Catalogue object NGC 41, a spiral galaxy in the constellation Pegasus.
In music[edit]
- "#41", a song by Dave Matthews Band.[7]
- "American Skin (41 Shots)" is a song by Bruce Springsteen about an immigrant murder victim who was shot at 41 times by the NYPD.[8]
In film[edit]
- The name of an independent documentary about Nicholas O'Neill, the youngest victim of the Station nightclub fire.[9]
- 2012 documentary on the life of the 41st President of the United States George H. W. Bush.[10]
In other fields[edit]
- The international direct dialing (IDD) code for Switzerland.[11]
- Bush 41, George H. W. Bush, the 41st President of the United States.[12]
- In Mexico "cuarenta y uno" (41) is slang referring to a homosexual. This is due to the 1901 arrest of 41 homosexuals at a hotel in Mexico City during the government of Porfirio Díaz (1876–1911). See: Dance of the Forty-One[13][14]
- Number of ballistic missile submarines of the George Washington class and its successors, collectively known as the "41 for Freedom".
- The 41st season of CBS's reality program Survivor is simply subtitled Survivor 41.[15]
See also[edit]
References[edit]
- ^ "Sloane's A002267 : The 15 supersingular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
- ^ "Sloane's A088165 : NSW primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
- ^ "Sloane's A080076 : Proth primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
- ^ Sloane, N. J. A. (ed.). "Sequence A001844 (Centered square numbers: a(n) is 2*n*(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z equal to Y+1) ordered by increasing Z; then sequence gives Z values.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-02-09.
- ^ Sloane, N. J. A. (ed.). "Sequence A000668 (Mersenne primes (primes of the form 2^n - 1).)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-02-09.
- ^ "Sloane's A013646: Least m such that continued fraction for sqrt(m) has period n". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-03-18.
- ^ #41 - Dave Matthews Band | Song Info | AllMusic, retrieved 2020-08-10
- ^ American Skin (41 Shots) - Mary J. Blige | Songs, Reviews, Credits | AllMusic, retrieved 2020-08-10
- ^ 41 (2007) - Christian O'Neill, Christian de Rezendes | Synopsis, Characteristics, Moods, Themes and Related | AllMovie, retrieved 2020-08-10
- ^ "OFCOM - Number blocks and codes". Archived from the original on 2010-07-15. Retrieved 2009-05-05.
- ^ Kellogg, William O. (2010). Barron's AP United States History (9th ed.). Barron's Educational Series. p. 364. ISBN 9780764141843.
George H. W. Bush (Republican) [Bush 41—i.e., the first President Bush, George H. W. Bush was the forty-first President of the United States, and so some have referred to him in this way since the election of his son, George W. Bush or Bush 43—the forty-third president of the United States.]
- ^ "Reference 1". Archived from the original on 2008-05-31. Retrieved 2008-06-13.
- ^ "Reference 2". Archived from the original on 2007-11-30. Retrieved 2008-06-13.
- ^ Wolfe, John (2020-07-17). "CBS Scratches 'Survivor' Season 41 Off Of Fall Schedule, Jeff Probst Dishes". Showbiz Cheat Sheet. Retrieved 2020-11-13.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction