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GCF Calculator — Greatest Common Factor with Euclidean Algorithm &

Find the Greatest Common Factor (also called GCD or HCF) of two numbers using both the Euclidean algorithm with step-by-step division and prime.

✓ Formula verified: May 2026

Greatest Common Factor

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GCF of 24 and 36
12

Euclidean Algorithm

24 = 36 × 0 + 24 | 36 = 24 × 1 + 12 | 24 = 12 × 2 + 0 | GCF(24, 36) = 12

Prime Data

{"a":[{"factor":2,"exponent":3},{"factor":3,"exponent":1}],"b":[{"factor":2,"exponent":2},{"factor":3,"exponent":2}],"shared":[{"factor":2,"exponent":2},{"factor":3,"exponent":1}]}

Shared Prime Factors

2^2 × 3^1

What if your number a changes? 21.6 → 3 · 24 → 12 · 26.4 → 2

Scenario Comparison

Conservative (5%)
$16,470.09
$6,470.09 interest
Your scenario (7%)
$20,096.61
$10,096.61 interest
Aggressive (10%)
$27,070.41
$17,070.41 interest
High-risk (14%)
$40,224.71
$30,224.71 interest
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GCF — Venn Diagram & Euclidean Algorithm

Greatest Common Factor

GCF(24, 36) = 12

24362^2 · 3^1= 12

Euclidean Algorithm

24 = 36 × 0 + 24

36 = 24 × 1 + 12

24 = 12 × 2 + 0

GCF(24, 36) = 12

Factors of 24

2^3 · 3^1

Factors of 36

2^2 · 3^2

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