> For the complete documentation index, see [llms.txt](https://tactlabs.gitbook.io/featurepreneur/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tactlabs.gitbook.io/featurepreneur/prime-numbers.md).

# Prime Numbers

Yes, we are obsessed with prime numbers! You can see all of our Tact coins are related to prime numbers!

**Prime Numbers under 100:**

2 

3 

5 

7 

11 

13 

17 

19 

23

* The earth's axis is tilted at approximately 23°
* Ninth prime number

 

29 

31 

37 

41 

43 

47 

53 

59 

61 

67:

71 

73 

79 

**83:**

* The sum of three consecutive numbers (23 + 29 + 31)
* the 23rd prime number
* is a safe prime

89 

**97:**

* The highest two digit prime number where the sume of its digits is a square.
* Is a Proth prime number