Compare 250 vs 251
| Property | 250 | 251 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 21 × 53 | 2511 |
| Prime factorization | 2 × 5 × 5 × 5 | 251 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 5, 10, 25, 50, 125, 250 | 1, 251 |
| Number of properties | 0 | 10 |
| Chen primes | 41st | |
| Good primes | 19th | |
| Harmonic primes | 20th | |
| Isolated primes | 21st | |
| Primes | 54th | |
| Sexy primes (1st member) | 30th | |
| Sexy prime quadrupletss (1st member) | 5th | |
| Sexy prime triplets (1st member) | 15th | |
| Solinas primes | 30th | |
| Sophie germain primes | 18th | |
| Roman numberals | CCL | CCLI |
| Base 2 | 111110102 | 111110112 |
| Base 3 | 1000213 | 1000223 |
| Base 4 | 33224 | 33234 |
| Base 5 | 20005 | 20015 |
| Base 6 | 10546 | 10556 |
| Base 7 | 5057 | 5067 |
| Base 8 | 3728 | 3738 |
| Base 9 | 3079 | 3089 |
| Base 10 | 25010 | 25110 |
| Base 11 | 20811 | 20911 |
| Base 12 | 18a12 | 18b12 |
| Base 13 | 16313 | 16413 |
| Base 14 | 13c14 | 13d14 |
| Base 15 | 11a15 | 11b15 |
| Base 16 | fa16 | fb16 |