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GCD & LCM Calculator
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Calculate the GCD (Greatest Common Divisor, also called HCF) and LCM (Least Common Multiple) for up to five numbers simultaneously. The prime factorization table shows the factorization for each input number side by side. For two-number GCD, the complete Euclidean algorithm steps are shown. Copy the GCD or LCM result individually. Supports integers from 1 to 10,000,000. Used in simplifying fractions, finding common denominators, solving scheduling problems, and elementary number theory.
How to Use
- 1Enter 2 to 5 numbers in the input fields - click Add Number to add more
- 2Click Calculate to see the GCD and LCM simultaneously
- 3The prime factorization table shows each number's factors side by side
- 4For 2-number inputs, Euclidean algorithm steps are shown
- 5Copy the GCD or LCM result individually with the copy buttons
Features
- Simultaneous GCD and LCM for up to 5 numbers
- Prime factorization table for all inputs side by side
- Euclidean algorithm steps shown for 2-number GCD
- Dynamic add/remove input rows
- Individual copy buttons for GCD and LCM
- 100% browser-based
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