Compare 245 vs 249
| Property | 245 | 249 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 51 × 72 | 31 × 831 |
| Prime factorization | 5 × 7 × 7 | 3 × 83 |
| Divisors count | 6 | 4 |
| Divisors | 1, 5, 7, 35, 49, 245 | 1, 3, 83, 249 |
| Number of properties | 0 | 1 |
| Semiprimes | 80th | |
| Roman numberals | CCXLV | CCXLIX |
| Base 2 | 111101012 | 111110012 |
| Base 3 | 1000023 | 1000203 |
| Base 4 | 33114 | 33214 |
| Base 5 | 14405 | 14445 |
| Base 6 | 10456 | 10536 |
| Base 7 | 5007 | 5047 |
| Base 8 | 3658 | 3718 |
| Base 9 | 3029 | 3069 |
| Base 10 | 24510 | 24910 |
| Base 11 | 20311 | 20711 |
| Base 12 | 18512 | 18912 |
| Base 13 | 15b13 | 16213 |
| Base 14 | 13714 | 13b14 |
| Base 15 | 11515 | 11915 |
| Base 16 | f516 | f916 |