Compare 1261 vs 1263
| Property | 1261 | 1263 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 971 | 31 × 4211 |
| Prime factorization | 13 × 97 | 3 × 421 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 97, 1261 | 1, 3, 421, 1263 |
| Number of properties | 1 | 1 |
| Semiprimes | 371st | 373rd |
| Roman numberals | MCCLXI | MCCLXIII |
| Base 2 | 100111011012 | 100111011112 |
| Base 3 | 12012013 | 12012103 |
| Base 4 | 1032314 | 1032334 |
| Base 5 | 200215 | 200235 |
| Base 6 | 55016 | 55036 |
| Base 7 | 34517 | 34537 |
| Base 8 | 23558 | 23578 |
| Base 9 | 16519 | 16539 |
| Base 10 | 126110 | 126310 |
| Base 11 | a4711 | a4911 |
| Base 12 | 89112 | 89312 |
| Base 13 | 76013 | 76213 |
| Base 14 | 66114 | 66314 |
| Base 15 | 59115 | 59315 |
| Base 16 | 4ed16 | 4ef16 |