LCM for 84 and 210

"Least Common Multiple" Calculator

Least Common Multiple of

and

What's the Least Common Multiple (LCM) of 84 and 210?

Answer: LCM of 84 and 210 is 420

(Four hundred twenty)

Finding LCM for 84 and 210 using GCF's of these numbers

The first method to find LCM for numbers 84 and 210 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 84 and 210 is 42, so

LCM = (84 × 210) ÷ 42

LCM = 17640 ÷ 42

LCM = 420

Finding LCM for 84 and 210 by Listing Multiples

The second method to find LCM for numbers 84 and 210 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 84: 84, 168, 252, 336, 420, 504, 588

Multiples of 210: 210, 420, 630, 840

So the LCM for 84 and 210 is 420

Finding LCM for 84 and 210 by Prime Factorization

Another method to find LCM for numbers 84 and 210 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 84: 2, 2, 3, 7 (exponent form: 22, 31, 71)

All Prime Factors of 210: 2, 3, 5, 7 (exponent form: 21, 31, 51, 71)

22 × 31 × 71 × 51 = 420

About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 84 and 210? (The answer is: 420). Select the first number (e.g. '84') and the second number (e.g. '210'). After that hit the 'Calculate' button.
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

"Least Common Multiple" Calculator

Least Common Multiple of

and

LCM Table

Number 1Number 2LCM
692104830
70210210
7121014910
722102520
7321015330
742107770
752101050
762107980
772102310
782102730
7921016590
802101680
812105670
822108610
8321017430
84210420
852103570
862109030
872106090
882109240
8921018690
90210630
912102730
922109660
932106510
942109870
952103990
962103360
9721020370
982101470

FAQ

What's the Least Common Multiple (LCM) of 84 and 210?

LCM of 84 and 210 is 420

See Also