Is 49 a prime number?
No, 49 is not a prime number. It is divisible by 7: 49 = 7 × 7.
Is 49 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 √49 ≈ 7.00. If none of them divides 49, it is prime.
- 3
7 divides 49 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 49 = 7^{2} \]Testing 49 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 49 ÷ 2 | leaves 1 |
| 3 | 49 ÷ 3 | leaves 1 |
| 5 | 49 ÷ 5 | leaves 4 |
| 7 | 49 ÷ 7 | divides exactly (7) |
Questions
Is 49 a prime number?
No, 49 is not a prime number. It is divisible by 7: 49 = 7 × 7.
What is the next prime after 49?
53.
What is the prime number before 49?
47.
What are the factors of 49?
1, 7, 49.