Is 47 a prime number?
Yes, 47 is a prime number. Its only factors are 1 and 47.
Is 47 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 √47 ≈ 6.86. If none of them divides 47, it is prime.
- 3
None of them divides 47, so it is prime.
Testing 47 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 47 ÷ 2 | leaves 1 |
| 3 | 47 ÷ 3 | leaves 2 |
| 5 | 47 ÷ 5 | leaves 2 |
Questions
Is 47 a prime number?
Yes, 47 is a prime number. Its only factors are 1 and 47.
What is the next prime after 47?
53.
What is the prime number before 47?
43.
What are the factors of 47?
1, 47.