Compare 21742 vs 21751
| Property | 21742 | 21751 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 71 × 15531 | 217511 |
| Prime factorization | 2 × 7 × 1553 | 21751 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 7, 14, 1553, 3106, 10871, 21742 | 1, 21751 |
| Number of properties | 0 | 5 |
| Harmonic primes | 898th | |
| Isolated primes | 1699th | |
| Lucky primes | 394th | |
| Primes | 2440th | |
| Sexy primes (1st member) | 739th | |
| Roman numberals | ||
| Base 2 | 1010100111011102 | 1010100111101112 |
| Base 3 | 10022110213 | 10022111213 |
| Base 4 | 111032324 | 111033134 |
| Base 5 | 11434325 | 11440015 |
| Base 6 | 2443546 | 2444116 |
| Base 7 | 1202507 | 1202627 |
| Base 8 | 523568 | 523678 |
| Base 9 | 327379 | 327479 |
| Base 10 | 2174210 | 2175110 |
| Base 11 | 1537611 | 1538411 |
| Base 12 | 106ba12 | 1070712 |
| Base 13 | 9b8613 | 9b9213 |
| Base 14 | 7cd014 | 7cd914 |
| Base 15 | 669715 | 66a115 |
| Base 16 | 54ee16 | 54f716 |