Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 635 and 641 the smallest integer that is 407035 that is divisible by both numbers.
Least Common Multiple (LCM) of 635 and 641 is 407035.
LCM(635,641) = 407035
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 635 and 641. First we will calculate the prime factors of 635 and 641.
Prime Factorization of 635
5 | 635 |
127 | 127 |
1 |
Prime factors of 635 are 5,127. Prime factorization of 635 in exponential form is:
635 = 51×1271
Prime Factorization of 641
641 | 641 |
1 |
Prime factors of 641 are 641. Prime factorization of 641 in exponential form is:
641 = 6411
Now multiplying the highest exponent prime factors to calculate the LCM of 635 and 641.
LCM(635,641) = 51×1271×6411
LCM(635,641) = 407035
Factors of 635
List of positive integer factors of 635 that divides 635 without a remainder.
1, 5, 127, 635
Factors of 641
List of positive integer factors of 641 that divides 641 without a remainder.
1, 641
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 635 and 641, than apply into the LCM equation.
GCF(635,641) = 1
LCM(635,641) = ( 635 × 641) / 1
LCM(635,641) = 407035 / 1
LCM(635,641) = 407035
(i) The LCM of 641 and 635 is associative
LCM of 635 and 641 = LCM of 641 and 635
1. What is the LCM of 635 and 641?
Answer: LCM of 635 and 641 is 407035.
2. What are the Factors of 635?
Answer: Factors of 635 are 1, 5, 127, 635. There are 4 integers that are factors of 635. The greatest factor of 635 is 635.
3. What are the Factors of 641?
Answer: Factors of 641 are 1, 641. There are 2 integers that are factors of 641. The greatest factor of 641 is 641.
4. How to Find the LCM of 635 and 641?
Answer:
Least Common Multiple of 635 and 641 = 407035
Step 1: Find the prime factorization of 635
635 = 5 x 127
Step 2: Find the prime factorization of 641
641 = 641
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 407035 = 5 x 127 x 641
Step 4: Therefore, the least common multiple of 635 and 641 is 407035.