We know that 

Prime number has 2 factors

And Composite number has more than 2 factors


For 1

Factors of 1

1 × 1 = 1

1 has only one factor

So, it is neither prime nor composite

  1. Chapter 3 Class 6 Playing with Numbers
  2. Concept wise

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.