Compare 21157 vs 21168
| Property | 21157 | 21168 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 9 |
| Prime factorization | 211571 | 24 × 33 × 72 |
| Prime factorization | 21157 | 2 × 2 × 2 × 2 × 3 × 3 × 3 × 7 × 7 |
| Divisors count | 2 | 60 |
| Divisors | 1, 21157 | 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 49, 54, 56, 63, 72, 84, 98, 108, 112, 126, 144, 147, 168, 189, 196, 216, 252, 294, 336, 378, 392, 432, 441, 504, 588, 756, 784, 882, 1008, 1176, 1323, 1512, 1764, 2352, 2646, 3024, 3528, 5292, 7056, 10584, 21168 |
| Number of properties | 5 | 0 |
| Isolated primes | 1659th | |
| Primes | 2378th | |
| Pythagorean primes | 1181st | |
| Sexy primes (1st member) | 720th | |
| Sexy prime triplets (1st member) | 197th | |
| Roman numberals | ||
| Base 2 | 1010010101001012 | 1010010101100002 |
| Base 3 | 10020001213 | 10020010003 |
| Base 4 | 110222114 | 110223004 |
| Base 5 | 11341125 | 11341335 |
| Base 6 | 2415416 | 2420006 |
| Base 7 | 1154537 | 1155007 |
| Base 8 | 512458 | 512608 |
| Base 9 | 320179 | 320309 |
| Base 10 | 2115710 | 2116810 |
| Base 11 | 1499411 | 149a411 |
| Base 12 | 102b112 | 1030012 |
| Base 13 | 982613 | 983413 |
| Base 14 | 79d314 | 7a0014 |
| Base 15 | 640715 | 641315 |
| Base 16 | 52a516 | 52b016 |