Compare 1553 vs 1556
| Property | 1553 | 1556 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 3 |
| Prime factorization | 15531 | 22 × 3891 |
| Prime factorization | 1553 | 2 × 2 × 389 |
| Divisors count | 2 | 6 |
| Divisors | 1, 1553 | 1, 2, 4, 389, 778, 1556 |
| Number of properties | 8 | 0 |
| Chen primes | 156th | |
| Cousin primes (2nd member) | 54th | |
| Isolated primes | 146th | |
| Long primes | 94th | |
| Primes | 245th | |
| Pythagorean primes | 118th | |
| Sexy primes (1st member) | 107th | |
| Ulam primes | 23rd | |
| Roman numberals | MDLIII | MDLVI |
| Base 2 | 110000100012 | 110000101002 |
| Base 3 | 20101123 | 20101223 |
| Base 4 | 1201014 | 1201104 |
| Base 5 | 222035 | 222115 |
| Base 6 | 111056 | 111126 |
| Base 7 | 43467 | 43527 |
| Base 8 | 30218 | 30248 |
| Base 9 | 21159 | 21189 |
| Base 10 | 155310 | 155610 |
| Base 11 | 119211 | 119511 |
| Base 12 | a9512 | a9812 |
| Base 13 | 92613 | 92913 |
| Base 14 | 7cd14 | 7d214 |
| Base 15 | 6d815 | 6db15 |
| Base 16 | 61116 | 61416 |