Is 743 a prime number?
Yes, 743 is a prime number. Its only factors are 1 and 743.
Is 743 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 √743 ≈ 27.26. If none of them divides 743, it is prime.
- 3
None of them divides 743, so it is prime.
Testing 743 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 743 ÷ 2 | leaves 1 |
| 3 | 743 ÷ 3 | leaves 2 |
| 5 | 743 ÷ 5 | leaves 3 |
| 7 | 743 ÷ 7 | leaves 1 |
| 11 | 743 ÷ 11 | leaves 6 |
| 13 | 743 ÷ 13 | leaves 2 |
| 17 | 743 ÷ 17 | leaves 12 |
| 19 | 743 ÷ 19 | leaves 2 |
| 23 | 743 ÷ 23 | leaves 7 |
Questions
Is 743 a prime number?
Yes, 743 is a prime number. Its only factors are 1 and 743.
What is the next prime after 743?
751.
What is the prime number before 743?
739.
What are the factors of 743?
1, 743.