Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7960 and 7961 the smallest integer that is 63369560 that is divisible by both numbers.
Least Common Multiple (LCM) of 7960 and 7961 is 63369560.
LCM(7960,7961) = 63369560
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 7960 and 7961. First we will calculate the prime factors of 7960 and 7961.
Prime Factorization of 7960
2 | 7960 |
2 | 3980 |
2 | 1990 |
5 | 995 |
199 | 199 |
1 |
Prime factors of 7960 are 2, 5,199. Prime factorization of 7960 in exponential form is:
7960 = 23×51×1991
Prime Factorization of 7961
19 | 7961 |
419 | 419 |
1 |
Prime factors of 7961 are 19,419. Prime factorization of 7961 in exponential form is:
7961 = 191×4191
Now multiplying the highest exponent prime factors to calculate the LCM of 7960 and 7961.
LCM(7960,7961) = 23×51×191×1991×4191
LCM(7960,7961) = 63369560
Factors of 7960
List of positive integer factors of 7960 that divides 7960 without a remainder.
1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960
Factors of 7961
List of positive integer factors of 7961 that divides 7961 without a remainder.
1, 19, 419, 7961
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7960 and 7961, than apply into the LCM equation.
GCF(7960,7961) = 1
LCM(7960,7961) = ( 7960 × 7961) / 1
LCM(7960,7961) = 63369560 / 1
LCM(7960,7961) = 63369560
(i) The LCM of 7961 and 7960 is associative
LCM of 7960 and 7961 = LCM of 7961 and 7960
1. What is the LCM of 7960 and 7961?
Answer: LCM of 7960 and 7961 is 63369560.
2. What are the Factors of 7960?
Answer: Factors of 7960 are 1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960. There are 16 integers that are factors of 7960. The greatest factor of 7960 is 7960.
3. What are the Factors of 7961?
Answer: Factors of 7961 are 1, 19, 419, 7961. There are 4 integers that are factors of 7961. The greatest factor of 7961 is 7961.
4. How to Find the LCM of 7960 and 7961?
Answer:
Least Common Multiple of 7960 and 7961 = 63369560
Step 1: Find the prime factorization of 7960
7960 = 2 x 2 x 2 x 5 x 199
Step 2: Find the prime factorization of 7961
7961 = 19 x 419
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 63369560 = 2 x 2 x 2 x 5 x 19 x 199 x 419
Step 4: Therefore, the least common multiple of 7960 and 7961 is 63369560.