Compare 201221 vs 201231
| Property | 201221 | 201231 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 5 |
| Prime factorization | 311 × 64911 | 33 × 291 × 2571 |
| Prime factorization | 31 × 6491 | 3 × 3 × 3 × 29 × 257 |
| Divisors count | 4 | 16 |
| Divisors | 1, 31, 6491, 201221 | 1, 3, 9, 27, 29, 87, 257, 261, 771, 783, 2313, 6939, 7453, 22359, 67077, 201231 |
| Number of properties | 1 | 0 |
| Semiprimes | 45508th | |
| Roman numberals | ||
| Base 2 | 1100010010000001012 | 1100010010000011112 |
| Base 3 | 1010200001223 | 1010200010003 |
| Base 4 | 3010200114 | 3010200334 |
| Base 5 | 224143415 | 224144115 |
| Base 6 | 41513256 | 41513436 |
| Base 7 | 14654367 | 14654527 |
| Base 8 | 6110058 | 6110178 |
| Base 9 | 3360189 | 3360309 |
| Base 10 | 20122110 | 20123110 |
| Base 11 | 1281a911 | 12820811 |
| Base 12 | 9854512 | 9855312 |
| Base 13 | 7078713 | 7079413 |
| Base 14 | 5348d14 | 5349914 |
| Base 15 | 3e94b15 | 3e95615 |
| Base 16 | 3120516 | 3120f16 |