GCF and LCM of 7 and 14
The greatest common factor and least common multiple of 7 and 14.
GCF of 7 and 14
7
LCM of 7 and 14
14
How it works
Break each number into its prime factors:
- 7 = 7
- 14 = 2 × 7
The GCF (7) multiplies the primes both share, at the lowest power each appears. The LCM (14) multiplies every prime that appears in either number, at the highest power — which is also 7 × 14 ÷ 7 = 14.
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Frequently asked questions
What is the GCF of 7 and 14?+
The greatest common factor (GCF) of 7 and 14 is 7 — the largest number that divides both 7 and 14 with no remainder.
What is the LCM of 7 and 14?+
The least common multiple (LCM) of 7 and 14 is 14 — the smallest number that both 7 and 14 divide into. It equals 7 × 14 ÷ GCF = 98 ÷ 7 = 14.