18th ulam prime is 991
Neighbours#
5319 | 9721 | 13113 | 19714 | 24111 |
40910 | 43111 | 60710 | 67310 | 73914 |
7518 | 98312 | 99111 | 110314 | 143313 |
148913 | 15316 | 15539 | 17099 | 17217 |
237110 | 239313 | 244710 | 26337 | 27897 |
Compare with#
5319 | 9721 | 13113 | 19714 | 24111 |
40910 | 43111 | 60710 | 67310 | 73914 |
7518 | 98312 | 99111 | 110314 | 143313 |
148913 | 15316 | 15539 | 17099 | 17217 |
237110 | 239313 | 244710 | 26337 | 27897 |
Related#
- Learn more about Ulam primes
- Check first 50 ulam primes
- Check ulam primes up to 1000
- Check all ulam primes