Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 423 and 425 the smallest integer that is 179775 that is divisible by both numbers.
Least Common Multiple (LCM) of 423 and 425 is 179775.
LCM(423,425) = 179775
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 423 and 425. First we will calculate the prime factors of 423 and 425.
Prime Factorization of 423
3 | 423 |
3 | 141 |
47 | 47 |
1 |
Prime factors of 423 are 3,47. Prime factorization of 423 in exponential form is:
423 = 32×471
Prime Factorization of 425
5 | 425 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 425 are 5,17. Prime factorization of 425 in exponential form is:
425 = 52×171
Now multiplying the highest exponent prime factors to calculate the LCM of 423 and 425.
LCM(423,425) = 32×52×171×471
LCM(423,425) = 179775
Factors of 423
List of positive integer factors of 423 that divides 423 without a remainder.
1, 3, 9, 47, 141, 423
Factors of 425
List of positive integer factors of 425 that divides 425 without a remainder.
1, 5, 17, 25, 85, 425
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 423 and 425, than apply into the LCM equation.
GCF(423,425) = 1
LCM(423,425) = ( 423 × 425) / 1
LCM(423,425) = 179775 / 1
LCM(423,425) = 179775
(i) The LCM of 425 and 423 is associative
LCM of 423 and 425 = LCM of 425 and 423
1. What is the LCM of 423 and 425?
Answer: LCM of 423 and 425 is 179775.
2. What are the Factors of 423?
Answer: Factors of 423 are 1, 3, 9, 47, 141, 423. There are 6 integers that are factors of 423. The greatest factor of 423 is 423.
3. What are the Factors of 425?
Answer: Factors of 425 are 1, 5, 17, 25, 85, 425. There are 6 integers that are factors of 425. The greatest factor of 425 is 425.
4. How to Find the LCM of 423 and 425?
Answer:
Least Common Multiple of 423 and 425 = 179775
Step 1: Find the prime factorization of 423
423 = 3 x 3 x 47
Step 2: Find the prime factorization of 425
425 = 5 x 5 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 179775 = 3 x 3 x 5 x 5 x 17 x 47
Step 4: Therefore, the least common multiple of 423 and 425 is 179775.