What is the 1217th prime number?
The 1217th prime number is 9859. The next prime is 9871 (a gap of 12) and the one before is 9857.
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 1217th one is 9859.
- 2
9859 is prime because no prime up to ā9859 ā 99.29 divides it.
- 3
The primes are spread thinner as numbers grow: by the prime number theorem the 1217th prime is close to 1217 Ć ln(1217) ā 8646, and here it is 9859.
- 4
9859 is a twin prime: 9857 and 9859 are both prime.
Primes around the 1217th
| Position | Prime | Gap from the previous |
|---|---|---|
| 1214 | 9839 | 6 |
| 1215 | 9851 | 12 |
| 1216 | 9857 | 6 |
| 1217 | 9859 | 2 |
| 1218 | 9871 | 12 |
| 1219 | 9883 | 12 |
| 1220 | 9887 | 4 |
Questions
What is the 1217th prime number?
9859.
Which prime number is 9859?
9859 is the 1217th prime number.
What is the sum of the first 1217 primes?
5,617,334.