Is 1378 a prime number?
No, 1378 is not a prime number. It is divisible by 2: 1378 = 2 × 689.
Is 1378 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 √1378 ≈ 37.12. If none of them divides 1378, it is prime.
- 3
2 divides 1378 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1378 = 2 \times 13 \times 53 \]
Testing 1378 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1378 ÷ 2 | divides exactly (689) |
| 3 | 1378 ÷ 3 | leaves 1 |
| 5 | 1378 ÷ 5 | leaves 3 |
| 7 | 1378 ÷ 7 | leaves 6 |
| 11 | 1378 ÷ 11 | leaves 3 |
| 13 | 1378 ÷ 13 | divides exactly (106) |
| 17 | 1378 ÷ 17 | leaves 1 |
| 19 | 1378 ÷ 19 | leaves 10 |
| 23 | 1378 ÷ 23 | leaves 21 |
| 29 | 1378 ÷ 29 | leaves 15 |
| 31 | 1378 ÷ 31 | leaves 14 |
| 37 | 1378 ÷ 37 | leaves 9 |
Questions
Is 1378 a prime number?
No, 1378 is not a prime number. It is divisible by 2: 1378 = 2 × 689.
What is the next prime after 1378?
1381.
What is the prime number before 1378?
1373.
What are the factors of 1378?
1, 2, 13, 26, 53, 106, 689, 1378.