Compare 16 vs 21
Property | 16 | 21 |
---|---|---|
Type | composite number | semiprime |
Unique factors | 1 | 2 |
Total factors | 4 | 2 |
Prime factorization | 24 | 31 × 71 |
Prime factorization | 2 × 2 × 2 × 2 | 3 × 7 |
Divisors count | 5 | 4 |
Divisors | 1, 2, 4, 8, 16 | 1, 3, 7, 21 |
Number of properties | 0 | 1 |
Semiprimes | 7th | |
Roman numberals | XVI | XXI |
Base 2 | 100002 | 101012 |
Base 3 | 1213 | 2103 |
Base 4 | 1004 | 1114 |
Base 5 | 315 | 415 |
Base 6 | 246 | 336 |
Base 7 | 227 | 307 |
Base 8 | 208 | 258 |
Base 9 | 179 | 239 |
Base 10 | 1610 | 2110 |
Base 11 | 1511 | 1a11 |
Base 12 | 1412 | 1912 |
Base 13 | 1313 | 1813 |
Base 14 | 1214 | 1714 |
Base 15 | 1115 | 1615 |
Base 16 | 1016 | 1516 |