LCD of 642, 689, 821 Calculator

Arrange the Inputs 642,689,821 in a horizontal line separated by commas and divide them with a prime number. Note the quotients in the next row and divide with quotients with prime numbers again. Continue the process until you have all co primes in the last.

Given numbers has no common factors except 1. So, there LCD is their product i.e 363159498

Step1:

Let's calculate the LCD of first two numbers

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(642, 689) = 1

LCD(642, 689) = ( 642 x 689 ) / 1

LCD(642, 689) = 442338 / 1

LCD(642, 689) = 442338

Step2:

Here we consider the LCD from the above i.e. 442338 as first number and the next as 821

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(442338, 821) = 1

LCD(442338, 821) = ( 442338 x 821 ) / 1

LCD(442338, 821) = 363159498 / 1

LCD(442338, 821) = 363159498

LCD of 642,689,821 is 363159498

Here are some samples of LCD of Numbers calculations.

• LCD of 119, 814, 189
• LCD of 235, 990, 370
• LCD of 298, 815, 206
• LCD of 433, 274, 362
• LCD of 587, 505, 848

1. What is the LCD of 642, 689, 821?

Answer: LCD of 642, 689, 821 is 363159498.

2. How to find LCD of 642, 689, 821 on a calculator?

Answer: You can find LCD of 642, 689, 821 by simply giving the inputs in the input field and clicking on the Calculator button next to it to get the concerned Least Common Denominator.

3. How to Find the LCD of 642, 689, 821?

Least Common Denominator of 642, 689, 821.

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 LCD(642, 689, 821) = 363159498.