Finding the GCD of Large Numbers Using Prime Factorization

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SUMMARY

The discussion focuses on finding the greatest common divisor (GCD) of the large numbers 22,471 and 3,266 using the Euclidean algorithm instead of prime factorization. Participants emphasize that for large integers, the Euclidean algorithm is more efficient and practical than attempting to factorize the numbers. The conclusion is that the GCD can be expressed in the form 22,471x + 3,266y, which can be derived using the Extended Euclidean algorithm.

PREREQUISITES
  • Understanding of the Euclidean algorithm for GCD calculation
  • Familiarity with the concept of prime factorization
  • Knowledge of linear combinations in number theory
  • Basic algebraic manipulation skills
NEXT STEPS
  • Study the Extended Euclidean algorithm for expressing GCD in linear combination form
  • Learn about the efficiency of the Euclidean algorithm compared to prime factorization
  • Explore applications of GCD in cryptography and number theory
  • Practice calculating GCD for large numbers using various algorithms
USEFUL FOR

Mathematics students, educators, and anyone interested in number theory or algorithms for computing GCD efficiently.

duki
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Homework Statement



Find the gcd of 22,471 and 3,266 and express in the form 22,471x + 3,266y

Homework Equations



The Attempt at a Solution



I know how to get the gcd of easy numbers... using the prime factorization. But how do I do that with numbers of this scale?
 
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Use the Euclidean algorithm. You don't have to factorize them.
 


thank you!
 

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