Compare 19987 vs 19990
| Property | 19987 | 19990 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 3 |
| Prime factorization | 111 × 231 × 791 | 21 × 51 × 19991 |
| Prime factorization | 11 × 23 × 79 | 2 × 5 × 1999 |
| Divisors count | 8 | 8 |
| Divisors | 1, 11, 23, 79, 253, 869, 1817, 19987 | 1, 2, 5, 10, 1999, 3998, 9995, 19990 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1001110000100112 | 1001110000101102 |
| Base 3 | 10001020213 | 10001021013 |
| Base 4 | 103201034 | 103201124 |
| Base 5 | 11144225 | 11144305 |
| Base 6 | 2323116 | 2323146 |
| Base 7 | 1121627 | 1121657 |
| Base 8 | 470238 | 470268 |
| Base 9 | 303679 | 303719 |
| Base 10 | 1998710 | 1999010 |
| Base 11 | 1402011 | 1402311 |
| Base 12 | b69712 | b69a12 |
| Base 13 | 913613 | 913913 |
| Base 14 | 73d914 | 73dc14 |
| Base 15 | 5dc715 | 5dca15 |
| Base 16 | 4e1316 | 4e1616 |