What is the Least Common Multiple of 639 and 643?
Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.
Least common multiple (LCM) of 639 and 643 is 410877.
LCM(639,643) = 410877
Least Common Multiple of 639 and 643 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 639 and 643, than apply into the LCM equation.
GCF(639,643) = 1
LCM(639,643) = ( 639 × 643) / 1
LCM(639,643) = 410877 / 1
LCM(639,643) = 410877
Least Common Multiple (LCM) of 639 and 643 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 639 and 643. First we will calculate the prime factors of 639 and 643.
Prime Factorization of 639
Prime factors of 639 are 3, 71. Prime factorization of 639 in exponential form is:
639 = 32 × 711
Prime Factorization of 643
Prime factors of 643 are 643. Prime factorization of 643 in exponential form is:
643 = 6431
Now multiplying the highest exponent prime factors to calculate the LCM of 639 and 643.
LCM(639,643) = 32 × 711 × 6431
LCM(639,643) = 410877
Related Least Common Multiples of 639
- LCM of 639 and 643
- LCM of 639 and 644
- LCM of 639 and 645
- LCM of 639 and 646
- LCM of 639 and 647
- LCM of 639 and 648
- LCM of 639 and 649
- LCM of 639 and 650
- LCM of 639 and 651
- LCM of 639 and 652
- LCM of 639 and 653
- LCM of 639 and 654
- LCM of 639 and 655
- LCM of 639 and 656
- LCM of 639 and 657
- LCM of 639 and 658
- LCM of 639 and 659
Related Least Common Multiples of 643
- LCM of 643 and 647
- LCM of 643 and 648
- LCM of 643 and 649
- LCM of 643 and 650
- LCM of 643 and 651
- LCM of 643 and 652
- LCM of 643 and 653
- LCM of 643 and 654
- LCM of 643 and 655
- LCM of 643 and 656
- LCM of 643 and 657
- LCM of 643 and 658
- LCM of 643 and 659
- LCM of 643 and 660
- LCM of 643 and 661
- LCM of 643 and 662
- LCM of 643 and 663