Enter an integer list
Use spaces, commas, semicolons or new lines between 2 and 20 signed decimal integers.
Private exact GCD and LCM calculator
The answer and every remainder in one place
GCDLCM parses signed decimal integers directly into BigInt, folds the list deterministically, and shows the same Euclidean work used by the result. Nothing is uploaded, rounded, guessed, or saved.
Exact BigInt · 2–20 integers · local only
Three explicit steps
Enter, calculate, verify
Choose GCD, LCM or both
The same exact service calculates every mode; the choice only narrows the result you copy.
Inspect folds and remainders
Confirm divisibility from the final result and reproduce any pair from its visible division equations.
Neutral integer tasks
Useful when several counts must share a factor or cycle
- Simplify a ratio shared by several integer counts.
- Find when abstract repeating sequences align again.
- Check a hand-worked Euclidean remainder chain.
- Reduce a list before a neutral discrete-math exercise.
2–20 integers · no upload
Calculate exact GCD and LCM with steps
Paste an integer list, choose the result, and inspect pairwise folds plus every Euclidean remainder equation locally.