Online communities are the groups of web savvy individuals who share communal interests. A community can be developed with just a single topic or by a bunch of philosophies. A better community binds its members through substantial debates. Mathematics is a very popular communal interest and there are hundreds of online communities formed in both Q&A and debate styles. Some mathematical communities are so immense that they serve two or three discussions every minute. If you are a math student, reader or research scholar then you must join in such places. Beyond sharpening math skills, these communities also help users to connect with other similar minded people. The following 8 communities are largest on the internet and are always worth joining:

## 1. Mathematics Stack Exchange

Stack Exchange is world’s largest Q&A network and the **Mathematics** community of this network is considered to be one of the most reliable resources for mathematics related information. **Mathematics Stack Exchange** is a website dedicated to all types of mathematical discussions. You can ask questions, provide answers and communicate with other users publicly.

**Members:** 300k+

**Since:** 2010

**Ideal for:** Any math major

## 2. Mathematics Google+ Community

Like the fasted growing social network Google+, *Mathematics* Google+ community has gained an amazing crowd of over 128 thousands readers in just two years. It supports serious discussions, informative readings, blog articles and multimedia images about math & related sciences.

**Members:** 204k

**Since:** 2012

**Ideal for:** Any math major.

## 3. r/math

*r/math* is probably the wisest sub-reddit of reddit.com. Here you can ask questions and discuss on mathematical internet links.

**Members:** 315k

**Since:** 2008

**Ideal for:** Any math major.

## 4. MathOverflow

‘The’ MathOverflow is similar to Math.StackExchange in theory, but it allows discussions about serious research topics only.

**Members:** 56k

**Since:** September 2009

**Ideal for:** Math graduates, research scholars

## 5. Math Help Forum

A forum dedicated to elementary & recreational mathematics topics.

**Members:** 50k

**Since:** 2005

**Ideal for:** High Schoolers, Laymen, Teens.

## 6. Number Theory LinkedIn Group

Open discussions about theories and new developments in number theory.

**Members:** 15K

**Since:** June 2012

**Ideal for:** Number Theory majors

## 7. Mathematicians LinkedIn Group

The basic idea of this community is to bring all the logical brains together and ignite the thought process of learning and teaching Mathematics with all possible practicalities.

**Members:** 20k

**Since:** September 2008

**Ideal for:** All math majors.

## 8. PlanetMath

PlanetMath aims to help make mathematical knowledge more accessible. The content is created collaboratively: almost the same way Wikipedia works.

**Members:** 2k

**Since:** 2013 *(current form)*