LCM for 49 and 56
What's the Least Common Multiple (LCM) of 49 and 56?
(Three hundred ninety-two)
Finding LCM for 49 and 56 using GCF's of these numbers
The first method to find LCM for numbers 49 and 56 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 49 and 56 is 7, so
LCM = (49 × 56) ÷ 7
LCM = 2744 ÷ 7
LCM = 392
Finding LCM for 49 and 56 by Listing Multiples
The second method to find LCM for numbers 49 and 56 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 49: 49, 98, 147, 196, 245, 294, 343, 392, 441, 490
Multiples of 56: 56, 112, 168, 224, 280, 336, 392, 448, 504
So the LCM for 49 and 56 is 392
Finding LCM for 49 and 56 by Prime Factorization
Another method to find LCM for numbers 49 and 56 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 49: 7, 7 (exponent form: 72)
All Prime Factors of 56: 2, 2, 2, 7 (exponent form: 23, 71)
72 × 23 = 392
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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