Primespiral

版本 2.0.0.0 (204.8 KB) 作者: Giuseppe Cardillo
Play into the world of prime numbers!
5.0
(4)
449.0 次下载
更新时间 2018/3/15
在 GitHub 上查看许可证

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

引用格式

Giuseppe Cardillo (2024). Primespiral (https://github.com/dnafinder/primespiral), GitHub. 检索时间: .

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创建方式 R2014b
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无法下载基于 GitHub 默认分支的版本

版本 已发布 发行说明
2.0.0.0

each plot contains two boxes with descriptions of chosen spiral and prime family
Github link
1.6.0.0

The function is more compact and rational.
Archimede spiral was added (to shows that prime numbers greater then 7 have 1, 3, 7 or 9 as last digit)
1.5.0.0

some minor bugs correction and new primes families added
1.4.0.0

some other primes families were added
1.3.0.0

Ulam Spiral added;
more simplex algorithm
1.2.0.0

bug correction in Dihedral primes computation; minimal primes added
1.1.0.0

change in help section to correctly cite the file
1.0.0.0

要查看或报告此来自 GitHub 的附加功能中的问题，请访问其 GitHub 仓库。
要查看或报告此来自 GitHub 的附加功能中的问题，请访问其 GitHub 仓库。