Compare 1240 vs 1243
| Property | 1240 | 1243 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 23 × 51 × 311 | 111 × 1131 |
| Prime factorization | 2 × 2 × 2 × 5 × 31 | 11 × 113 |
| Divisors count | 16 | 4 |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240 | 1, 11, 113, 1243 |
| Number of properties | 0 | 1 |
| Semiprimes | 366th | |
| Roman numberals | MCCXL | MCCXLIII |
| Base 2 | 100110110002 | 100110110112 |
| Base 3 | 12002213 | 12010013 |
| Base 4 | 1031204 | 1031234 |
| Base 5 | 144305 | 144335 |
| Base 6 | 54246 | 54316 |
| Base 7 | 34217 | 34247 |
| Base 8 | 23308 | 23338 |
| Base 9 | 16279 | 16319 |
| Base 10 | 124010 | 124310 |
| Base 11 | a2811 | a3011 |
| Base 12 | 87412 | 87712 |
| Base 13 | 74513 | 74813 |
| Base 14 | 64814 | 64b14 |
| Base 15 | 57a15 | 57d15 |
| Base 16 | 4d816 | 4db16 |