Compare 1561 vs 1622
| Property | 1561 | 1622 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 2231 | 21 × 8111 |
| Prime factorization | 7 × 223 | 2 × 811 |
| Divisors count | 4 | 4 |
| Divisors | 1, 7, 223, 1561 | 1, 2, 811, 1622 |
| Number of properties | 1 | 1 |
| Semiprimes | 453rd | 465th |
| Roman numberals | MDLXI | MDCXXII |
| Base 2 | 110000110012 | 110010101102 |
| Base 3 | 20102113 | 20200023 |
| Base 4 | 1201214 | 1211124 |
| Base 5 | 222215 | 224425 |
| Base 6 | 111216 | 113026 |
| Base 7 | 43607 | 45057 |
| Base 8 | 30318 | 31268 |
| Base 9 | 21249 | 22029 |
| Base 10 | 156110 | 162210 |
| Base 11 | 119a11 | 124511 |
| Base 12 | aa112 | b3212 |
| Base 13 | 93113 | 97a13 |
| Base 14 | 7d714 | 83c14 |
| Base 15 | 6e115 | 73215 |
| Base 16 | 61916 | 65616 |