LCM for 19 and 57

The first method to find LCM for numbers 19 and 57 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 19 and 57 is 19, so

LCM = (19 × 57) ÷ 19

LCM = 1083 ÷ 19

LCM = 57

The second method to find LCM for numbers 19 and 57 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 19: 19, 38, 57, 76, 95

Multiples of 57: 57, 114, 171, 228, 285, [...], 57

So the LCM for 19 and 57 is 57

Another method to find LCM for numbers 19 and 57 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: