By Team Edtoolkits · Study & learning
Find the LCM, HCF (GCD) and prime factorisation of two to five numbers, with factor trees, the division method and Euclid's steps shown as in class.
Use the guide alongside the working tool.
Open LCM, HCF & Prime Factor Calculator →Get started
Type two to five whole numbers, separated by commas.
Adjust and explore
Read the LCM, HCF and prime factors, and look at each factor tree.
Save and share
Follow the working, then copy it or share a link.
Privacy and limits
Positive whole numbers up to 1,000,000,000,000 only (the LCM must also stay exact, below about 9 quadrillion). Nothing you enter leaves your device.
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