Is 779 a prime number?
No, 779 is not a prime number. It is divisible by 19: 779 = 19 × 41.
Is 779 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 √779 ≈ 27.91. If none of them divides 779, it is prime.
- 3
19 divides 779 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 779 = 19 \times 41 \]
Testing 779 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 779 ÷ 2 | leaves 1 |
| 3 | 779 ÷ 3 | leaves 2 |
| 5 | 779 ÷ 5 | leaves 4 |
| 7 | 779 ÷ 7 | leaves 2 |
| 11 | 779 ÷ 11 | leaves 9 |
| 13 | 779 ÷ 13 | leaves 12 |
| 17 | 779 ÷ 17 | leaves 14 |
| 19 | 779 ÷ 19 | divides exactly (41) |
| 23 | 779 ÷ 23 | leaves 20 |
Questions
Is 779 a prime number?
No, 779 is not a prime number. It is divisible by 19: 779 = 19 × 41.
What is the next prime after 779?
787.
What is the prime number before 779?
773.
What are the factors of 779?
1, 19, 41, 779.