Primespiral
Play into the world of prime numbers!
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Primespiral is a function to explore the distribution of prime numbers arranged into a spiral pattern.
The well-known Ulam spiral and the variant developed by Robert Sacks,
the Sacks spiral, show interesting geometric patterns in the positions of primes.
Syntax: primesout=primespiral(t)
Inputs:
t - is an integer number. The spiral will be plotted between 0 and t
If t is omitted, it will be set to 3571 (between 0 and 3571
there are 500 prime numbers).
Outputs:
primesout - the primes of the choosed family, between 0 and t.
The function will ask if you want to use the Ulam, Sacks, Vogel or Archimede spiral.
Then it will ask if you want to highlight a particular prime family.
Outputs:
The primes of the family you choosed between 0 and t
Created by Giuseppe Cardillo
giuseppe.cardillo-edta@poste.it
To cite this file, this would be an appropriate format:
Cardillo G. (2014) Primespiral: Play into the world of prime numbers!
http://www.mathworks.com/matlabcentral/fileexchange/46025
인용 양식
Giuseppe Cardillo (2026). Primespiral (https://github.com/dnafinder/primespiral), GitHub. 검색 날짜: .
GitHub 디폴트 브랜치를 사용하는 버전은 다운로드할 수 없음
| 버전 | 퍼블리시됨 | 릴리스 정보 | Action |
|---|---|---|---|
| 2.0.0.0 | each plot contains two boxes with descriptions of chosen spiral and prime family
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| 1.6.0.0 | The function is more compact and rational.
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| 1.5.0.0 | some minor bugs correction and new primes families added |
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| 1.4.0.0 | some other primes families were added |
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| 1.3.0.0 | Ulam Spiral added;
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| 1.2.0.0 | bug correction in Dihedral primes computation; minimal primes added |
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| 1.1.0.0 | change in help section to correctly cite the file |
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| 1.0.0.0 |
