LCM for 6 and 7
What's the Least Common Multiple (LCM) of 6 and 7?
(Forty-two)
Finding LCM for 6 and 7 using GCF's of these numbers
The first method to find LCM for numbers 6 and 7 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 6 and 7 is 1, so
LCM = (6 × 7) ÷ 1
LCM = 42 ÷ 1
LCM = 42
Finding LCM for 6 and 7 by Listing Multiples
The second method to find LCM for numbers 6 and 7 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56
So the LCM for 6 and 7 is 42
Finding LCM for 6 and 7 by Prime Factorization
Another method to find LCM for numbers 6 and 7 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 6: 2, 3 (exponent form: 21, 31)
All Prime Factors of 7: 7 (exponent form: 71)
21 × 31 × 71 = 42
Related Calculations
See Also
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
<a href="https://calculat.io/en/number/least-common-multiple-lcm-of/6--7">What is the LCM of 6 and 7? - Calculatio</a>
LCM Table
About "Least Common Multiple" Calculator
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers