LCM for 42 and 126
What's the Least Common Multiple (LCM) of 42 and 126?
(One hundred twenty-six)
Finding LCM for 42 and 126 using GCF's of these numbers
The first method to find LCM for numbers 42 and 126 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 42 and 126 is 42, so
LCM = (42 × 126) ÷ 42
LCM = 5292 ÷ 42
LCM = 126
Finding LCM for 42 and 126 by Listing Multiples
The second method to find LCM for numbers 42 and 126 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 42: 42, 84, 126, 168, 210
Multiples of 126: 126, 252, 378, 504, 630, [...], 126
So the LCM for 42 and 126 is 126
Finding LCM for 42 and 126 by Prime Factorization
Another method to find LCM for numbers 42 and 126 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 42: 2, 3, 7 (exponent form: 21, 31, 71)
All Prime Factors of 126: 2, 3, 3, 7 (exponent form: 21, 32, 71)
21 × 32 × 71 = 126
<a href="https://calculat.io/en/number/least-common-multiple-lcm-of/42--126">What is the LCM of 42 and 126? - 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