Is 144 a prime number?
No, 144 is not a prime number. It is divisible by 2: 144 = 2 × 72.
Is 144 prime?
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A prime number has exactly two factors: 1 and itself.
- 2
It is enough to test the primes up to √144 ≈ 12.00. If none of them divides 144, it is prime.
- 3
2 divides 144 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 144 = 2^{4} \times 3^{2} \]Testing 144 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 144 ÷ 2 | divides exactly (72) |
| 3 | 144 ÷ 3 | divides exactly (48) |
| 5 | 144 ÷ 5 | leaves 4 |
| 7 | 144 ÷ 7 | leaves 4 |
| 11 | 144 ÷ 11 | leaves 1 |
Questions
Is 144 a prime number?
No, 144 is not a prime number. It is divisible by 2: 144 = 2 × 72.
What is the next prime after 144?
149.
What is the prime number before 144?
139.
What are the factors of 144?
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144.