Compare 181231 vs 181243
| Property | 181231 | 181243 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 611 × 29711 | 1812431 |
| Prime factorization | 61 × 2971 | 181243 |
| Divisors count | 4 | 2 |
| Divisors | 1, 61, 2971, 181231 | 1, 181243 |
| Number of properties | 1 | 5 |
| Additive primes | 6693rd | |
| Isolated primes | 12458th | |
| Lucky primes | 2127th | |
| Primes | 16433rd | |
| Semiprimes | 41202nd | |
| Super primes | 1905th | |
| Roman numberals | ||
| Base 2 | 1011000011111011112 | 1011000011111110112 |
| Base 3 | 1000121210213 | 1000121212013 |
| Base 4 | 2300332334 | 2300333234 |
| Base 5 | 212444115 | 212444335 |
| Base 6 | 35150116 | 35150316 |
| Base 7 | 13532417 | 13532567 |
| Base 8 | 5417578 | 5417738 |
| Base 9 | 3055379 | 3055519 |
| Base 10 | 18123110 | 18124310 |
| Base 11 | 11418611 | 11419711 |
| Base 12 | 88a6712 | 88a7712 |
| Base 13 | 6464b13 | 6465a13 |
| Base 14 | 4a09114 | 4a09d14 |
| Base 15 | 38a7115 | 38a7d15 |
| Base 16 | 2c3ef16 | 2c3fb16 |