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Prime Factorisation
Last updated at July 9, 2025 by Teachoo
Class 6 (Ganita Prakash & Old NCERT)
Chapter 5 Class 6 - Prime Time (Ganita Prakash)
- Factors and Multiples
- Common Multiples
- Common Factors
- Idli Vada Game
- Jumpy Jackpot
- Figure it out - Page 110, 111
- Prime Numbers
- Figure it out - Page 114, 115
- Co-prime numbers (and art)
-
Prime Factorisation
- Uses of Prime Factorisation
- Divisibility Tests
- Figure it out - Page 125, 126
- Fun with numbers
- Teachoo Questions - MCQs
- Teachoo Questions - Mix
- Teachoo Questions - Assertion Reasoning
- Teachoo Questions - Case Based
Transcript
Prime Factorization Prime factorization is a method to write number as multiplication of prime numbers Let’s take an example 24 Prime Factorization of 24 = 2 × 2 × 2 × 3 12 12 = 2 × 2 × 3 16 16 = 2 × 2 × 2 × 2 Steps The steps are Divide the number by 2. If it is divisible, continue dividing by prime number until we cannot further divide If number becomes 1, stop. If the number is not 1, keep on dividing by other prime numbers 3, 5, 7, 11… Stop when number becomes 1 324 324 = 2 × 2 × 3 × 3 × 3 × 3 3360 3360 = 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 Note: In prime factorization, we only include prime numbers. So, 1 and the number itself is not included in it
