Print a copy of this prime number chart printable (PDF) which features a visual representation of the prime numbers from 1 to 100.

I originally created this prime numbers chart for my pre-calculus students to use as a reference while simplifying radicals. My students used this chart as a quick way to tell if a number was prime since they knew that if a radical had a prime radicand that it would never simplify.

It has a wide range of other uses in the middle school and high school math classroom. I also included this printable prime numbers chart along with a few other math charts for my students to use as a reference to create a foldable reference chart for my high school math students to reference. Also included are pythagorean triples, factors of 1-100, perfect squares, and perfect cubes.

If you are looking for other printable charts, I have a wide variety of free printable math charts for teachers to download and use with their students.

## What is a Prime Number Chart?

This prime number chart is a number grid (specifically a hundreds chart) which has each of the prime numbers under 100 highlighted in gray. The non-highlighted numbers (other than 1) are composite numbers. The number 1 is neither prime nor composite.

## List of Prime Numbers 1-100

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

## Uses for Prime Number Charts

- Determining if a number is prime or composite
- Identifying Radicals which do not Simplify
- Finding the Prime Factorization of a Natural Number
- Finding Common Denominators – If One of the Denominators is Prime, you will need to multiply the two denominators to find a common denominator.

## Create Your Own Prime Number Chart

Do you want to have students create their own prime number chart? I offer several free printable number charts which could easily be color-coded to create prime and composite numbers charts.

You could also have students work through a Sieve of Eratosthenes activity to determine if given numbers are prime or composite.

## More Resources for Teaching Prime Numbers

- Prime Factorization Foldable
- Prime Factorization Graphic Organizer
- Prime Climb Game Review (An Excellent Game by Dan Finkel)
- Prime Numbers Poster
- Prime and Composite Number Chart for Color-Coding

## Free Download of Prime Numbers Chart

This prime number chart is available in pdf format and as an editable Publisher file. In order to edit the Publisher file, you will need to make sure that you have Microsoft Publisher installed on your computer.

**PDF**

Prime Numbers Under 100 Chart (PDF) (4070 downloads )

**Publisher File **

Prime Numbers Under 100 Chart (Editable Publisher File ZIP) (1689 downloads )

## More Free Math Reference Charts

- Divisibility Rules Chart
- Number Chart 1-20
- 1-200 Number Chart
- 1-150 Number Chart
- Multiplication Chart 1-40
- Times Tables 1-12
- Multiplication Table 1-30
- Blank 120 Chart
- 120 Chart
- Right Triangle Trig Formula Sheet
- Multiplication Table 1-15
- Multiplication Table 1-25
- Multiplication Table 1-20
- Factorials Table
- Printable Math Charts
- Printable Blank Multiplication Charts
- Blank Multiplication Chart 15×15
- Blank Multiplication Chart 1-20
- Blank Multiplication Chart 1-10
- Blank Multiplication Chart 12 x 12
- Multiplication Chart 1-100
- Multiplication Chart 1-12
- Fill in the Blank Unit Circle Chart
- Free Printable Greek Alphabet
- Free Printable Factors Chart 1-100
- Foldable Math Reference Chart
- Printable Multiplication Charts
- Prime Numbers Chart
- Printable 0-99 Chart
- Blank Hundred Chart
- Hundreds Chart Printable
- Exponents Chart (Powers of 2 to 9)
- Powers of 2 Chart
- Trig Identities Cheat Sheet [Free Printable]
- Prime Factorization Foldable
- Prime Numbers Below 100 Chart
- Grouping Symbols Reference Chart & Poster
- Mathematician’s Toolbox Foldable for INBs