Compare 1243 vs 1261
| Property | 1243 | 1261 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 1131 | 131 × 971 |
| Prime factorization | 11 × 113 | 13 × 97 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 113, 1243 | 1, 13, 97, 1261 |
| Number of properties | 1 | 1 |
| Semiprimes | 366th | 371st |
| Roman numberals | MCCXLIII | MCCLXI |
| Base 2 | 100110110112 | 100111011012 |
| Base 3 | 12010013 | 12012013 |
| Base 4 | 1031234 | 1032314 |
| Base 5 | 144335 | 200215 |
| Base 6 | 54316 | 55016 |
| Base 7 | 34247 | 34517 |
| Base 8 | 23338 | 23558 |
| Base 9 | 16319 | 16519 |
| Base 10 | 124310 | 126110 |
| Base 11 | a3011 | a4711 |
| Base 12 | 87712 | 89112 |
| Base 13 | 74813 | 76013 |
| Base 14 | 64b14 | 66114 |
| Base 15 | 57d15 | 59115 |
| Base 16 | 4db16 | 4ed16 |