Is 790 a prime number?
No, 790 is not a prime number. It is divisible by 2: 790 = 2 × 395.
Is 790 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 √790 ≈ 28.11. If none of them divides 790, it is prime.
- 3
2 divides 790 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 790 = 2 \times 5 \times 79 \]
Testing 790 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 790 ÷ 2 | divides exactly (395) |
| 3 | 790 ÷ 3 | leaves 1 |
| 5 | 790 ÷ 5 | divides exactly (158) |
| 7 | 790 ÷ 7 | leaves 6 |
| 11 | 790 ÷ 11 | leaves 9 |
| 13 | 790 ÷ 13 | leaves 10 |
| 17 | 790 ÷ 17 | leaves 8 |
| 19 | 790 ÷ 19 | leaves 11 |
| 23 | 790 ÷ 23 | leaves 8 |
Questions
Is 790 a prime number?
No, 790 is not a prime number. It is divisible by 2: 790 = 2 × 395.
What is the next prime after 790?
797.
What is the prime number before 790?
787.
What are the factors of 790?
1, 2, 5, 10, 79, 158, 395, 790.