What is the Least Common Multiple of 643 and 647?
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 643 and 647 is 416021.
LCM(643,647) = 416021
Least Common Multiple of 643 and 647 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 643 and 647, than apply into the LCM equation.
GCF(643,647) = 1
LCM(643,647) = ( 643 × 647) / 1
LCM(643,647) = 416021 / 1
LCM(643,647) = 416021
Least Common Multiple (LCM) of 643 and 647 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 643 and 647. First we will calculate the prime factors of 643 and 647.
Prime Factorization of 643
Prime factors of 643 are 643. Prime factorization of 643 in exponential form is:
643 = 6431
Prime Factorization of 647
Prime factors of 647 are 647. Prime factorization of 647 in exponential form is:
647 = 6471
Now multiplying the highest exponent prime factors to calculate the LCM of 643 and 647.
LCM(643,647) = 6431 × 6471
LCM(643,647) = 416021
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
Related Least Common Multiples of 647
- LCM of 647 and 651
- LCM of 647 and 652
- LCM of 647 and 653
- LCM of 647 and 654
- LCM of 647 and 655
- LCM of 647 and 656
- LCM of 647 and 657
- LCM of 647 and 658
- LCM of 647 and 659
- LCM of 647 and 660
- LCM of 647 and 661
- LCM of 647 and 662
- LCM of 647 and 663
- LCM of 647 and 664
- LCM of 647 and 665
- LCM of 647 and 666
- LCM of 647 and 667