Compare 27991 vs 28021
| Property | 27991 | 28021 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 231 × 12171 | 71 × 40031 |
| Prime factorization | 23 × 1217 | 7 × 4003 |
| Divisors count | 4 | 4 |
| Divisors | 1, 23, 1217, 27991 | 1, 7, 4003, 28021 |
| Number of properties | 1 | 1 |
| Semiprimes | 6980th | 6989th |
| Roman numberals | ||
| Base 2 | 1101101010101112 | 1101101011101012 |
| Base 3 | 11021012013 | 11021022113 |
| Base 4 | 123111134 | 123113114 |
| Base 5 | 13434315 | 13440415 |
| Base 6 | 3333316 | 3334216 |
| Base 7 | 1444157 | 1444607 |
| Base 8 | 665278 | 665658 |
| Base 9 | 423519 | 423849 |
| Base 10 | 2799110 | 2802110 |
| Base 11 | 1a03711 | 1a06411 |
| Base 12 | 1424712 | 1427112 |
| Base 13 | c98213 | c9a613 |
| Base 14 | a2b514 | a2d714 |
| Base 15 | 846115 | 848115 |
| Base 16 | 6d5716 | 6d7516 |