Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 700 and 705 the smallest integer that is 98700 that is divisible by both numbers.
Least Common Multiple (LCM) of 700 and 705 is 98700.
LCM(700,705) = 98700
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 700 and 705. First we will calculate the prime factors of 700 and 705.
Prime Factorization of 700
2 | 700 |
2 | 350 |
5 | 175 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 700 are 2, 5,7. Prime factorization of 700 in exponential form is:
700 = 22×52×71
Prime Factorization of 705
3 | 705 |
5 | 235 |
47 | 47 |
1 |
Prime factors of 705 are 3, 5,47. Prime factorization of 705 in exponential form is:
705 = 31×51×471
Now multiplying the highest exponent prime factors to calculate the LCM of 700 and 705.
LCM(700,705) = 22×31×52×71×471
LCM(700,705) = 98700
Factors of 700
List of positive integer factors of 700 that divides 700 without a remainder.
1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700
Factors of 705
List of positive integer factors of 705 that divides 705 without a remainder.
1, 3, 5, 15, 47, 141, 235, 705
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 700 and 705, than apply into the LCM equation.
GCF(700,705) = 5
LCM(700,705) = ( 700 × 705) / 5
LCM(700,705) = 493500 / 5
LCM(700,705) = 98700
(i) The LCM of 705 and 700 is associative
LCM of 700 and 705 = LCM of 705 and 700
1. What is the LCM of 700 and 705?
Answer: LCM of 700 and 705 is 98700.
2. What are the Factors of 700?
Answer: Factors of 700 are 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700. There are 18 integers that are factors of 700. The greatest factor of 700 is 700.
3. What are the Factors of 705?
Answer: Factors of 705 are 1, 3, 5, 15, 47, 141, 235, 705. There are 8 integers that are factors of 705. The greatest factor of 705 is 705.
4. How to Find the LCM of 700 and 705?
Answer:
Least Common Multiple of 700 and 705 = 98700
Step 1: Find the prime factorization of 700
700 = 2 x 2 x 5 x 5 x 7
Step 2: Find the prime factorization of 705
705 = 3 x 5 x 47
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 98700 = 2 x 2 x 3 x 5 x 5 x 7 x 47
Step 4: Therefore, the least common multiple of 700 and 705 is 98700.