Least Common Multiple of 42, 19, 21, 63

Least common multiple or lowest common denominator (lcd) can be calculated in three ways

• Least Common Multiple of 42, 19, 21, 63 by common division method
• Least Common Multiple of 42, 19, 21, 63 with GCF Formula

∴ So the LCM of the given numbers is 3 x 7 x 2 x 19 x 1 x 3 = 2394

The formula of LCM is LCM(a₁,a₂,a₃....,a_n) = ( a₁ × a₂ × a₃ × .... × a_n) / GCF(a₁,a₂,a₃....,a_n) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 42,19,21,63 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(42,19,21,63) = 1

common factors(in case of two or more numbers have common factors) = 441

GCF(42,19,21,63) x common factors =1 x 441 = 441

LCM(42,19,21,63) = ( 42 × 19 × 21 × 63 ) / 441

LCM(42,19,21,63) = 1055754 / 441

LCM(42,19,21,63) = 2394

∴ Least Common Multiple of 42,19,21,63 is 2394

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 27, 75, 19, 79
• LCM of 66, 23, 74, 17
• LCM of 44, 70, 41, 79
• LCM of 73, 42, 62, 90
• LCM of 13, 19, 45, 76

1. What is the LCM of 42, 19, 21, 63?

Answer: LCM of 42, 19, 21, 63 is 2394.

2. What are the Factors of 2394?

Answer: Factors of 2394 are . There are integers that are factors of 2394

3. How to Find the LCM of 42, 19, 21, 63 ?

Least Common Multiple of 42, 19, 21, 63.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCM(42, 19, 21, 63) = 2 x 3 x 3 x 7 x 19 = 2394.