What is the GCF of 1225 and 643?
The GCF of 1225 and 643 is 1.
Steps to find GCF
- Find the prime factorization of 1225
1225 = 5 × 5 × 7 × 7 - Find the prime factorization of 643
643 = 643 - To find the GCF, multiply all the prime factors common to both numbers:
Note that there are no common prime factors. - Therefore, GCF = 1 (since 1 is a factor of every number)
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Related
Find HCF of: 2450 & 1286 3675 & 1929 6125 & 3215 8575 & 4501 2450 & 643 1225 & 1286 3675 & 643 1225 & 1929 6125 & 643 1225 & 3215 8575 & 643 1225 & 4501
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).