Compare 1491 vs 1493
| Property | 1491 | 1493 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 71 × 711 | 14931 |
| Prime factorization | 3 × 7 × 71 | 1493 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 7, 21, 71, 213, 497, 1491 | 1, 1493 |
| Number of properties | 0 | 12 |
| Additive primes | 129th | |
| Cousin primes (2nd member) | 53rd | |
| Isolated primes | 139th | |
| Primes | 238th | |
| Prime quintuplet 2s (5th member) | 4th | |
| Prime triplets (3rd member) | 41st | |
| Pythagorean primes | 116th | |
| Sexy primes (1st member) | 105th | |
| Sexy primes (2nd member) | 104th | |
| Sexy prime quadrupletss (3rd member) | 9th | |
| Sexy prime triplets (2nd member) | 40th | |
| Sexy prime triplets (3rd member) | 39th | |
| Roman numberals | MCDXCI | MCDXCIII |
| Base 2 | 101110100112 | 101110101012 |
| Base 3 | 20010203 | 20010223 |
| Base 4 | 1131034 | 1131114 |
| Base 5 | 214315 | 214335 |
| Base 6 | 105236 | 105256 |
| Base 7 | 42307 | 42327 |
| Base 8 | 27238 | 27258 |
| Base 9 | 20369 | 20389 |
| Base 10 | 149110 | 149310 |
| Base 11 | 113611 | 113811 |
| Base 12 | a4312 | a4512 |
| Base 13 | 8a913 | 8ab13 |
| Base 14 | 78714 | 78914 |
| Base 15 | 69615 | 69815 |
| Base 16 | 5d316 | 5d516 |