GCF and LCM of 3 and 4
The greatest common factor and least common multiple of 3 and 4.
GCF of 3 and 4
1
LCM of 3 and 4
12
How it works
Break each number into its prime factors:
- 3 = 3
- 4 = 2²
The GCF (1) multiplies the primes both share, at the lowest power each appears. The LCM (12) multiplies every prime that appears in either number, at the highest power — which is also 3 × 4 ÷ 1 = 12.
Try other numbers
Need a different pair? The LCM & GCF calculator computes the GCF and LCM for any two numbers.
Related pairs
Frequently asked questions
What is the GCF of 3 and 4?+
The greatest common factor (GCF) of 3 and 4 is 1 — the largest number that divides both 3 and 4 with no remainder.
What is the LCM of 3 and 4?+
The least common multiple (LCM) of 3 and 4 is 12 — the smallest number that both 3 and 4 divide into. It equals 3 × 4 ÷ GCF = 12 ÷ 1 = 12.