What is the LCM of 840 and 810?
The LCM of 840 and 810 is 22680.
Steps to find LCM
- Find the prime factorization of 840
840 = 2 × 2 × 2 × 3 × 5 × 7 - Find the prime factorization of 810
810 = 2 × 3 × 3 × 3 × 3 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 - LCM = 22680
MathStep (Works offline)
Download our mobile app and learn how to find LCM of upto four numbers in your own time:
Android and iPhone/ iPad
Find least common multiple (LCM) of: 1680 & 1620 420 & 405 2520 & 2430 280 & 270 4200 & 4050 168 & 162 5880 & 5670 1680 & 810 840 & 1620 2520 & 810 840 & 2430 4200 & 810 840 & 4050 5880 & 810 840 & 5670
LCM Calculator
Enter two numbers separate by comma. To find least common multiple (LCM) of more than two numbers, click here.