Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 817 and 822 the smallest integer that is 671574 that is divisible by both numbers.
Least Common Multiple (LCM) of 817 and 822 is 671574.
LCM(817,822) = 671574
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 817 and 822. First we will calculate the prime factors of 817 and 822.
Prime Factorization of 817
19 | 817 |
43 | 43 |
1 |
Prime factors of 817 are 19,43. Prime factorization of 817 in exponential form is:
817 = 191×431
Prime Factorization of 822
2 | 822 |
3 | 411 |
137 | 137 |
1 |
Prime factors of 822 are 2, 3,137. Prime factorization of 822 in exponential form is:
822 = 21×31×1371
Now multiplying the highest exponent prime factors to calculate the LCM of 817 and 822.
LCM(817,822) = 21×31×191×431×1371
LCM(817,822) = 671574
Factors of 817
List of positive integer factors of 817 that divides 817 without a remainder.
1, 19, 43, 817
Factors of 822
List of positive integer factors of 822 that divides 822 without a remainder.
1, 2, 3, 6, 137, 274, 411, 822
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 817 and 822, than apply into the LCM equation.
GCF(817,822) = 1
LCM(817,822) = ( 817 × 822) / 1
LCM(817,822) = 671574 / 1
LCM(817,822) = 671574
(i) The LCM of 822 and 817 is associative
LCM of 817 and 822 = LCM of 822 and 817
1. What is the LCM of 817 and 822?
Answer: LCM of 817 and 822 is 671574.
2. What are the Factors of 817?
Answer: Factors of 817 are 1, 19, 43, 817. There are 4 integers that are factors of 817. The greatest factor of 817 is 817.
3. What are the Factors of 822?
Answer: Factors of 822 are 1, 2, 3, 6, 137, 274, 411, 822. There are 8 integers that are factors of 822. The greatest factor of 822 is 822.
4. How to Find the LCM of 817 and 822?
Answer:
Least Common Multiple of 817 and 822 = 671574
Step 1: Find the prime factorization of 817
817 = 19 x 43
Step 2: Find the prime factorization of 822
822 = 2 x 3 x 137
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 671574 = 2 x 3 x 19 x 43 x 137
Step 4: Therefore, the least common multiple of 817 and 822 is 671574.