Compare 689881 vs 689891
| Property | 689881 | 689891 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 237891 | 6898911 |
| Prime factorization | 29 × 23789 | 689891 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 23789, 689881 | 1, 689891 |
| Number of properties | 1 | 4 |
| Additive primes | 21765th | |
| Chen primes | 21770th | |
| Primes | 55804th | |
| Semiprimes | 147322nd | |
| Twin primes (1st member) | 5992nd | |
| Roman numberals | ||
| Base 2 | 101010000110110110012 | 101010000110111000112 |
| Base 3 | 10220011000113 | 10220011001123 |
| Base 4 | 22201231214 | 22201232034 |
| Base 5 | 1340340115 | 1340340315 |
| Base 6 | 224415216 | 224415356 |
| Base 7 | 56022137 | 56022267 |
| Base 8 | 25033318 | 25033438 |
| Base 9 | 12613049 | 12613159 |
| Base 10 | 68988110 | 68989110 |
| Base 11 | 43135511 | 43136411 |
| Base 12 | 2932a112 | 2932ab12 |
| Base 13 | 1b201a13 | 1b202713 |
| Base 14 | 13d5b314 | 13d5bd14 |
| Base 15 | d962115 | d962b15 |
| Base 16 | a86d916 | a86e316 |