Is 429 a prime number?
No, 429 is not a prime number. It is divisible by 3: 429 = 3 × 143.
Is 429 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 √429 ≈ 20.71. If none of them divides 429, it is prime.
- 3
3 divides 429 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 429 = 3 \times 11 \times 13 \]
Testing 429 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 429 ÷ 2 | leaves 1 |
| 3 | 429 ÷ 3 | divides exactly (143) |
| 5 | 429 ÷ 5 | leaves 4 |
| 7 | 429 ÷ 7 | leaves 2 |
| 11 | 429 ÷ 11 | divides exactly (39) |
| 13 | 429 ÷ 13 | divides exactly (33) |
| 17 | 429 ÷ 17 | leaves 4 |
| 19 | 429 ÷ 19 | leaves 11 |
Questions
Is 429 a prime number?
No, 429 is not a prime number. It is divisible by 3: 429 = 3 × 143.
What is the next prime after 429?
431.
What is the prime number before 429?
421.
What are the factors of 429?
1, 3, 11, 13, 33, 39, 143, 429.