Compare 399998 vs 400009
| Property | 399998 | 400009 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 1999991 | 4000091 |
| Prime factorization | 2 × 199999 | 400009 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 199999, 399998 | 1, 400009 |
| Number of properties | 1 | 5 |
| Additive primes | 13374th | |
| Chen primes | 13664th | |
| Happy primes | 4997th | |
| Isolated primes | 26254th | |
| Primes | 33861st | |
| Semiprimes | 87553rd | |
| Roman numberals | ||
| Base 2 | 11000011010011111102 | 11000011010100010012 |
| Base 3 | 2020222002023 | 2020222010113 |
| Base 4 | 12012213324 | 12012220214 |
| Base 5 | 1002444435 | 1003000145 |
| Base 6 | 123235026 | 123235216 |
| Base 7 | 32541147 | 32541317 |
| Base 8 | 14151768 | 14152118 |
| Base 9 | 6686229 | 6686349 |
| Base 10 | 39999810 | 40000910 |
| Base 11 | 25358511 | 25359511 |
| Base 12 | 17359212 | 1735a112 |
| Base 13 | 1100b113 | 1100bc13 |
| Base 14 | a5ab414 | a5ac114 |
| Base 15 | 7d7b815 | 7d7c415 |
| Base 16 | 61a7e16 | 61a8916 |