Compare 20391 vs 20399
| Property | 20391 | 20399 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 71 × 9711 | 203991 |
| Prime factorization | 3 × 7 × 971 | 20399 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 7, 21, 971, 2913, 6797, 20391 | 1, 20399 |
| Number of properties | 0 | 6 |
| Additive primes | 1071st | |
| Chen primes | 1133rd | |
| Isolated primes | 1614th | |
| Primes | 2305th | |
| Sexy primes (2nd member) | 705th | |
| Ulam primes | 169th | |
| Roman numberals | ||
| Base 2 | 1001111101001112 | 1001111101011112 |
| Base 3 | 10002220203 | 10002221123 |
| Base 4 | 103322134 | 103322334 |
| Base 5 | 11230315 | 11230445 |
| Base 6 | 2342236 | 2342356 |
| Base 7 | 1133107 | 1133217 |
| Base 8 | 476478 | 476578 |
| Base 9 | 308669 | 308759 |
| Base 10 | 2039110 | 2039910 |
| Base 11 | 1435811 | 1436511 |
| Base 12 | b97312 | b97b12 |
| Base 13 | 938713 | 939213 |
| Base 14 | 760714 | 761114 |
| Base 15 | 609615 | 609e15 |
| Base 16 | 4fa716 | 4faf16 |