Find the greatest common factor of any numbers or polynomial terms step-by-step on AskSia. Choose the prime factorization method or the Euclidean algorithm, and see the GCF used to factor polynomials or reduce fractions to lowest terms.
The AskSia GCF solver is an AI tool that finds the greatest common factor (GCF) of two or more integers, or of two or more polynomial terms. For integers, AskSia uses the prime factorization method (factor each number, take the lowest power of each prime that appears in all factorizations) or the Euclidean algorithm (repeated division until the remainder is zero). For polynomial terms, AskSia finds the GCF of the numeric coefficients and the lowest power of each variable that appears in every term. Useful for factoring, simplifying fractions, and number theory.
Prime factorization is clear for small numbers. The Euclidean algorithm is fast for large numbers. AskSia picks the right one and shows the work, so you can apply it on your next problem.
Factor each number into primes, then take the lowest power of each prime that appears in all factorizations. For GCF(24, 60): 24 = 2³ × 3, 60 = 2² × 3 × 5, so GCF = 2² × 3 = 12. AskSia shows the prime factorizations on a factor tree.
For large numbers where prime factorization is tedious, AskSia uses the Euclidean algorithm: repeatedly divide and take the remainder until the remainder is zero. The last nonzero remainder is the GCF. Useful for AP and college-level problems.
For polynomial terms like 12x³y² and 18x²y⁴, AskSia finds the numeric GCF (6) and the lowest power of each variable that appears in both (x² and y²), giving 6x²y². Useful as the first step in factoring.
Once the GCF of all terms is found, AskSia factors it out and writes the polynomial as GCF times the remaining factor. For 12x³ + 18x², the GCF is 6x², and the factored form is 6x²(2x + 3).
Fractions are reduced by dividing both numerator and denominator by their GCF. AskSia handles 48/72 by finding GCF(48, 72) = 24, then reducing to 2/3.
GCF works for any number of integers or polynomial terms. AskSia handles GCF(36, 60, 84) by including all three in the prime factorization step, taking the lowest power of each prime across all three.
Snap a photo, paste, or type the integers or polynomial terms. AskSia accepts any number of inputs separated by commas or spaces.
AskSia picks prime factorization for small numbers and the Euclidean algorithm for large numbers. For polynomial terms, AskSia uses the combined numeric and variable-power method.
The GCF is shown, with the prime factorizations or Euclidean steps displayed. If the input was polynomial, AskSia also shows the factored form with the GCF pulled out.
Every solve syncs across Web, iOS, and Android — start it at your desk, finish on your phone.
Split-panel interface with the worked solution on the left, the auto-generated diagram and AI tutor chat on the right.
Open the camera, frame the problem, and the worked solution plus diagram appear in seconds.
First-time GCF problems with small positive integers. AskSia draws factor trees for each number and identifies the common primes clearly.
To reduce a fraction to lowest terms, find the GCF of numerator and denominator and divide both by it. AskSia handles both the GCF step and the division.
The first step in factoring is always to pull out the GCF of all terms. AskSia identifies the GCF and writes the polynomial in factored form.
When the numbers are too large for easy prime factorization, AskSia uses the Euclidean algorithm: repeated division until the remainder is zero. Common in AP and college number theory.
GCF of three or more integers, or of three or more polynomial terms. AskSia handles arbitrarily many inputs and shows the prime factorization for all of them.
The Euclidean algorithm for GCF is the foundation for modular arithmetic and intro number theory in discrete math and CS. AskSia explains the algorithm's correctness alongside the steps.
General chatbots hallucinate. Photo solvers stop at math. AskSia is built for actual coursework with verified accuracy, visual learning, and every subject.
| Feature | AskSia Solver | ChatGPT | Photo Solvers |
|---|---|---|---|
| Solution accuracy | ✓ 98% | ~70-85%, hallucinations | ~90%, math only |
| Auto-generated diagrams | ✓ Every solve | Inconsistent / broken | Graphs only, math-only |
| Step-by-step explanations | ✓ Numbered + plain English | Inconsistent depth | ✓ Math steps |
| Subject coverage | ✓ Math, Physics, Chem, Bio, CS, Econ | ✓ Wide but unverified | Math only |
| Photo input | ✓ Handwriting + diagrams + code | Photos OK, weak on handwriting | ✓ Math photos only |
| Answer verification | ✓ Self-checked before display | No verification | Math engine only |
| Tutor follow-ups | ✓ Hints, alt methods, ELI5 | ✓ General chat | Not available |
| Practice and flashcards | ✓ One-tap from any solve | Manual prompting | Not available |
| Code debugging | ✓ Python, Java, C++, SQL... | ✓ Yes | Not available |
| Free to start | ✓ Daily solves, no card | Limited model access | Steps locked behind paywall |
Join 2M+ students using AskSia to find the greatest common factor of any numbers or polynomial terms, with prime factorization or the Euclidean algorithm shown step-by-step.