User:E-is-funny-letter/sandbox

This is the central sandbox page of user:E-is-funny-letter. It serves as a testing spot and page development space for the user and is not an encyclopedia article. Primey number    Create new page:  generic article   Culture Art  Artistic tool   Plastic arts  Technique    Sculpture   Ceramic   Glass object   Jewellery   Woodwork  Painting  Wallpainting / cave art   Painting / sketch   Engraving   Miniature painting  Performing arts  Musical   Opera    Music album    Dance   Literature  Prose   Audiovisual arts Other arts Handcrafts  Technique   Cultural heritage Tangible The copyrights are usually expired  Archaeological site    Historic landscape   Historic settlement   Museum    Archive   Library   Intangible Collective cultural expression of people  Folk dance   Custom, ritual   Folk tale    Game    Traditional cuisine   Costume  Persons  Person (general)    Artist    Writer   Places  River    City    Park    Cave   Economy  Profession   Vehicles  Ship   Medicine  Medical condition    Drug, treatment, or device    Surgerie or procedure    Sign or symptom    Medical test    Anatomy    Medical specialty   Help: Manual of Style for Medicine-related articles Check if page already exists Main Draft User                                             (articles)     (drafts)       (sandboxes)

sandbox is a number that 'looks' prime.

Definition

A positive integer $n\in \mathbb {Z} ^{+}$ is a primey number if and only if it satisfies the following:

Prime Inclusion: $n$ is a prime number (i.e., divisible only by $1$ and itself).

Pseudo-Primality: $n$ appears prime under casual inspection, satisfying: $n$ is odd. $n$ is not divisible by $2,3$ or $5$, unless such divisibility is non-obvious. $n$ does not end in $0$ or $5$, have obvious identification factors (e.g., repeated digits), or be a perfect square.

Exceptions: $n$ may still be primey if it fails the above but subjectively seems primey, such as $153$ or $171$.

Disqualifications: $n$ is not primey if it is clearly composite due to trivial patterns or small divisors.

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In essence, a primey number is either a prime or a "vibe check" pass for seeming prime.

List of Primey Numbers

Below are a list of primey numbers.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 57, 59, 61, 67, 71, 73, 79, 83, 87, 89, 93, 97, 101, 103, 107, 109, 111, 113, 119, 123, 127, 131, 137, 139, 143, 147, 149, 151, 153, 157, 161, 163, 167, 171, 173, 179, 181, 183, 187, 189, 191, 193, 197, 199.

See also

•  Prime number
•  Composite number
• Natural number
• Pseudoprime

References

Clawson, Calvin C. (1996). Mathematical Mysteries: The Beauty and Magic of Numbers. Cambridge: Perseus. p. 195. ISBN 0-7382-0259-2.
Cipra, Barry Arthur (December 23, 1988). "PCs Factor a 'Most Wanted' Number". Science. 242 (4886): 1634–1635. Bibcode:1988Sci...242.1634C. doi:10.1126/science.242.4886.1634. PMID 17730568.
Weisstein, Eric W. "Fermat Pseudoprime". MathWorld.

Documentation

Usage

This page is used by {{User sandbox+}}. See that page for more details.

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