LCM for 17 and 18
What's the Least Common Multiple (LCM) of 17 and 18?
(Three hundred six)
Finding LCM for 17 and 18 using GCF's of these numbers
The first method to find LCM for numbers 17 and 18 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 17 and 18 is 1, so
LCM = (17 × 18) ÷ 1
LCM = 306 ÷ 1
LCM = 306
Finding LCM for 17 and 18 by Listing Multiples
The second method to find LCM for numbers 17 and 18 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 17: 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 272, 289, 306, 323, 340
Multiples of 18: 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234, 252, 270, 288, 306, 324, 342
So the LCM for 17 and 18 is 306
Finding LCM for 17 and 18 by Prime Factorization
Another method to find LCM for numbers 17 and 18 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 17: 17 (exponent form: 171)
All Prime Factors of 18: 2, 3, 3 (exponent form: 21, 32)
171 × 21 × 32 = 306
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/17--18">What is the LCM of 17 and 18? - 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