What is the GCF of 1243 and 490?
The GCF of 1243 and 490 is 1.
Steps to find GCF
- Find the prime factorization of 1243
1243 = 11 × 113 - Find the prime factorization of 490
490 = 2 × 5 × 7 × 7 - 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: 2486 & 980 3729 & 1470 6215 & 2450 8701 & 3430 2486 & 490 1243 & 980 3729 & 490 1243 & 1470 6215 & 490 1243 & 2450 8701 & 490 1243 & 3430
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).