What is the 1st prime number?
The 1st prime number is 2. The next prime is 3 (a gap of 1).
Position
Pick any whole number from 1 to 10,000.
How to work it out
- 1
List the primes in order: 2, 3, 5, 7, 11, 13, ā¦ The 1st one is 2.
- 2
2 is prime because no prime up to ā2 ā 1.41 divides it.
- 3
The primes are spread thinner as numbers grow: by the prime number theorem the 1st prime is close to 1 Ć ln(1) ā 0.
- 4
2 has no twin: neither 0 nor 4 is prime.
Primes around the 1st
| Position | Prime | Gap from the previous |
|---|---|---|
| 1 | 2 | - |
| 2 | 3 | 1 |
| 3 | 5 | 2 |
| 4 | 7 | 2 |
Questions
What is the 1st prime number?
2.
Which prime number is 2?
2 is the 1st prime number.
What is the sum of the first 1 primes?
2.