Compare 381215 vs 381221
| Property | 381215 | 381221 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 762431 | 3812211 |
| Prime factorization | 5 × 76243 | 381221 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 76243, 381215 | 1, 381221 |
| Number of properties | 1 | 4 |
| Additive primes | 12842nd | |
| Chen primes | 13115th | |
| Primes | 32387th | |
| Semiprimes | 83645th | |
| Twin primes (1st member) | 3655th | |
| Roman numberals | ||
| Base 2 | 10111010001000111112 | 10111010001001001012 |
| Base 3 | 2011002210023 | 2011002210223 |
| Base 4 | 11310101334 | 11310102114 |
| Base 5 | 441443305 | 441443415 |
| Base 6 | 121005156 | 121005256 |
| Base 7 | 31452627 | 31453017 |
| Base 8 | 13504378 | 13504458 |
| Base 9 | 6408329 | 6408389 |
| Base 10 | 38121510 | 38122110 |
| Base 11 | 24045a11 | 24046511 |
| Base 12 | 16473b12 | 16474512 |
| Base 13 | 10469313 | 10469913 |
| Base 14 | 9ccd914 | 9cd0114 |
| Base 15 | 77e4515 | 77e4b15 |
| Base 16 | 5d11f16 | 5d12516 |