Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 691 and 692 the smallest integer that is 478172 that is divisible by both numbers.
Least Common Multiple (LCM) of 691 and 692 is 478172.
LCM(691,692) = 478172
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 691 and 692. First we will calculate the prime factors of 691 and 692.
Prime Factorization of 691
691 | 691 |
1 |
Prime factors of 691 are 691. Prime factorization of 691 in exponential form is:
691 = 6911
Prime Factorization of 692
2 | 692 |
2 | 346 |
173 | 173 |
1 |
Prime factors of 692 are 2,173. Prime factorization of 692 in exponential form is:
692 = 22×1731
Now multiplying the highest exponent prime factors to calculate the LCM of 691 and 692.
LCM(691,692) = 22×1731×6911
LCM(691,692) = 478172
Factors of 691
List of positive integer factors of 691 that divides 691 without a remainder.
1, 691
Factors of 692
List of positive integer factors of 692 that divides 692 without a remainder.
1, 2, 4, 173, 346, 692
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 691 and 692, than apply into the LCM equation.
GCF(691,692) = 1
LCM(691,692) = ( 691 × 692) / 1
LCM(691,692) = 478172 / 1
LCM(691,692) = 478172
(i) The LCM of 692 and 691 is associative
LCM of 691 and 692 = LCM of 692 and 691
1. What is the LCM of 691 and 692?
Answer: LCM of 691 and 692 is 478172.
2. What are the Factors of 691?
Answer: Factors of 691 are 1, 691. There are 2 integers that are factors of 691. The greatest factor of 691 is 691.
3. What are the Factors of 692?
Answer: Factors of 692 are 1, 2, 4, 173, 346, 692. There are 6 integers that are factors of 692. The greatest factor of 692 is 692.
4. How to Find the LCM of 691 and 692?
Answer:
Least Common Multiple of 691 and 692 = 478172
Step 1: Find the prime factorization of 691
691 = 691
Step 2: Find the prime factorization of 692
692 = 2 x 2 x 173
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 478172 = 2 x 2 x 173 x 691
Step 4: Therefore, the least common multiple of 691 and 692 is 478172.