Compare 513 vs 523
| Property | 513 | 523 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 33 × 191 | 5231 |
| Prime factorization | 3 × 3 × 3 × 19 | 523 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 9, 19, 27, 57, 171, 513 | 1, 523 |
| Number of properties | 0 | 3 |
| Left-truncatable primes | 34th | |
| Primes | 99th | |
| Twin primes (2nd member) | 25th | |
| Roman numberals | DXIII | DXXIII |
| Base 2 | 10000000012 | 10000010112 |
| Base 3 | 2010003 | 2011013 |
| Base 4 | 200014 | 200234 |
| Base 5 | 40235 | 40435 |
| Base 6 | 22136 | 22316 |
| Base 7 | 13327 | 13457 |
| Base 8 | 10018 | 10138 |
| Base 9 | 6309 | 6419 |
| Base 10 | 51310 | 52310 |
| Base 11 | 42711 | 43611 |
| Base 12 | 36912 | 37712 |
| Base 13 | 30613 | 31313 |
| Base 14 | 28914 | 29514 |
| Base 15 | 24315 | 24d15 |
| Base 16 | 20116 | 20b16 |