Compare 1240 vs 1249
| Property | 1240 | 1249 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 23 × 51 × 311 | 12491 |
| Prime factorization | 2 × 2 × 2 × 5 × 31 | 1249 |
| Divisors count | 16 | 2 |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240 | 1, 1249 |
| Number of properties | 0 | 5 |
| Emirps | 58th | |
| Isolated primes | 121st | |
| Lucky primes | 53rd | |
| Primes | 204th | |
| Pythagorean primes | 101st | |
| Roman numberals | MCCXL | MCCXLIX |
| Base 2 | 100110110002 | 100111000012 |
| Base 3 | 12002213 | 12010213 |
| Base 4 | 1031204 | 1032014 |
| Base 5 | 144305 | 144445 |
| Base 6 | 54246 | 54416 |
| Base 7 | 34217 | 34337 |
| Base 8 | 23308 | 23418 |
| Base 9 | 16279 | 16379 |
| Base 10 | 124010 | 124910 |
| Base 11 | a2811 | a3611 |
| Base 12 | 87412 | 88112 |
| Base 13 | 74513 | 75113 |
| Base 14 | 64814 | 65314 |
| Base 15 | 57a15 | 58415 |
| Base 16 | 4d816 | 4e116 |