Compare 1251 vs 1261
| Property | 1251 | 1261 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 32 × 1391 | 131 × 971 |
| Prime factorization | 3 × 3 × 139 | 13 × 97 |
| Divisors count | 6 | 4 |
| Divisors | 1, 3, 9, 139, 417, 1251 | 1, 13, 97, 1261 |
| Number of properties | 0 | 1 |
| Semiprimes | 371st | |
| Roman numberals | MCCLI | MCCLXI |
| Base 2 | 100111000112 | 100111011012 |
| Base 3 | 12011003 | 12012013 |
| Base 4 | 1032034 | 1032314 |
| Base 5 | 200015 | 200215 |
| Base 6 | 54436 | 55016 |
| Base 7 | 34357 | 34517 |
| Base 8 | 23438 | 23558 |
| Base 9 | 16409 | 16519 |
| Base 10 | 125110 | 126110 |
| Base 11 | a3811 | a4711 |
| Base 12 | 88312 | 89112 |
| Base 13 | 75313 | 76013 |
| Base 14 | 65514 | 66114 |
| Base 15 | 58615 | 59115 |
| Base 16 | 4e316 | 4ed16 |