What is the Greatest Common Factor of 625 and 643?
Greatest common factor (GCF) of 625 and 643 is 1.
GCF(625,643) = 1
We will now calculate the prime factors of 625 and 643, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 625 and 643.
How to find the GCF of 625 and 643?
We will first find the prime factorization of 625 and 643. After we will calculate the factors of 625 and 643 and find the biggest common factor number .
Step-1: Prime Factorization of 625
Prime factors of 625 are 5. Prime factorization of 625 in exponential form is:
625 = 54
Step-2: Prime Factorization of 643
Prime factors of 643 are 643. Prime factorization of 643 in exponential form is:
643 = 6431
Step-3: Factors of 625
List of positive integer factors of 625 that divides 625 without a remainder.
1, 5, 25, 125
Step-4: Factors of 643
List of positive integer factors of 643 that divides 625 without a remainder.
1
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 625 and 643. The biggest common factor number is the GCF number.
So the greatest common factor 625 and 643 is 1.
Also check out the Least Common Multiple of 625 and 643
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Related Greatest Common Factors of 643
- GCF of 643 and 647
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