Compare 686139 vs 686143
| Property | 686139 | 686143 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 2287131 | 6861431 |
| Prime factorization | 3 × 228713 | 686143 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 228713, 686139 | 1, 686143 |
| Number of properties | 1 | 3 |
| Primes | 55522nd | |
| Semiprimes | 146562nd | |
| Sexy primes (1st member) | 11936th | |
| Twin primes (2nd member) | 5976th | |
| Roman numberals | ||
| Base 2 | 101001111000001110112 | 101001111000001111112 |
| Base 3 | 10212120121203 | 10212120122013 |
| Base 4 | 22132003234 | 22132003334 |
| Base 5 | 1334240245 | 1334240335 |
| Base 6 | 224123236 | 224123316 |
| Base 7 | 55552567 | 55552637 |
| Base 8 | 24740738 | 24740778 |
| Base 9 | 12551769 | 12551819 |
| Base 10 | 68613910 | 68614310 |
| Base 11 | 42956311 | 42956711 |
| Base 12 | 2910a312 | 2910a712 |
| Base 13 | 1b03cc13 | 1b040313 |
| Base 14 | 13c09d14 | 13c0a314 |
| Base 15 | d847915 | d847d15 |
| Base 16 | a783b16 | a783f16 |