Extended Euclidean Algorithm Calculator
Find GCD and Bezout coefficients (x, y) such that ax + by = gcd(a, b).
Enter Numbers
Algorithm Steps
| Step | q | r | s | t |
|---|---|---|---|---|
| 0 | - | 240 | 1 | 0 |
| 1 | - | 46 | 0 | 1 |
| 2 | 5 | 10 | 1 | -5 |
| 3 | 4 | 6 | -4 | 21 |
| 4 | 1 | 4 | 5 | -26 |
| 5 | 1 | 2 | -9 | 47 |
| 6 | 2 | 0 | 23 | -120 |
Algorithm
The extended algorithm finds x, y such that:
Recurrence relations:
rįµ¢ = rįµ¢āā - qįµ¢rįµ¢āā
sįµ¢ = sįµ¢āā - qįµ¢sįµ¢āā
tįµ¢ = tįµ¢āā - qįµ¢tįµ¢āā
Greatest Common Divisor
GCD = 2
Bezout Coefficients
x
-9
y
47
Bezout Identity
240 Ć (-9) + 46 Ć (47) = 2
Verification: Correct
Applications
- Finding modular multiplicative inverse
- Solving linear Diophantine equations
- RSA cryptography key generation
- Computing continued fractions
What Is a Extended Euclidean Calculator?
A extended euclidean calculator helps you perform extended euclidean calculations quickly and accurately. Enter your values and get instant results with step-by-step breakdowns showing exactly how each result was derived.
This calculator handles 2 input values: a, b. Results are computed using standard mathematical formulas and displayed with precision suitable for homework, professional work, and quick references.
The Extended Euclidean Formula
The calculator applies the following mathematical relationships:
Extended Euclidean Formula
Where:
- Input= Enter values in the input fields to compute results
Understanding the Results
The results display shows the computed value{s} along with related quantities. Each result is computed using JavaScript's built-in Math functions (Math.PI, Math.sqrt, etc.) for maximum precision.
All results are shown to four decimal places by default, which is sufficient for most practical applications including construction, engineering, and academic work.
How to Use This Calculator
- Enter a: Type a value in the a field. Default value is 240.
- Enter b: Type a value in the b field. Default value is 46.
- Read the results: The calculator updates immediately as you type, showing computed values with full step-by-step breakdowns.
Real-World Applications
Extended Euclidean calculations appear in numerous fields. In education, students use them to verify homework answers and understand the underlying formulas. In engineering, these calculations inform design decisions and safety margins. In everyday life, quick calculations help with home improvement projects, budgeting, and planning.
The specific formulas used by this calculator are standard in the field and can be verified in any mathematics or engineering textbook. Bookmark this page as a quick reference whenever you need to perform extended euclidean calculations.
Worked Examples
Example Calculation
Problem:
Use the default values to compute the result.
Solution Steps:
- 1Enter a = 240.
- 2Enter b = 46.
- 3The calculator computes the result using the appropriate formula.
- 4Review the step-by-step breakdown to understand the process.
Result:
The computed result is displayed in the highlighted result card above.
Tips & Best Practices
- āDouble-check your inputs ā a single typo can produce dramatically different results.
- āUse consistent units throughout ā don't mix centimeters with inches or meters with feet.
- āReview the step-by-step breakdown to verify that the formula was applied correctly for your inputs.
- āBookmark this page for quick access to extended euclidean calculations whenever needed.
- āFor very large or small numbers, the calculator may display results in exponential notation.
- āCompare results with manual calculations occasionally to build confidence in the tool and your math skills.
Frequently Asked Questions
Sources & References
- Khan Academy (2024)
- Wikipedia - Mathematics (2024)
- Wolfram MathWorld (2024)
Last updated: 2026-06-06
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: Handbook of Mathematical Functions
by Abramowitz & Stegun