Compare 28139 vs 28151
| Property | 28139 | 28151 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 191 × 14811 | 281511 |
| Prime factorization | 19 × 1481 | 28151 |
| Divisors count | 4 | 2 |
| Divisors | 1, 19, 1481, 28139 | 1, 28151 |
| Number of properties | 1 | 5 |
| Additive primes | 1405th | |
| Chen primes | 1492nd | |
| Harmonic primes | 1145th | |
| Isolated primes | 2175th | |
| Primes | 3070th | |
| Semiprimes | 7015th | |
| Roman numberals | ||
| Base 2 | 1101101111010112 | 1101101111101112 |
| Base 3 | 11021210123 | 11021211223 |
| Base 4 | 123132234 | 123133134 |
| Base 5 | 14000245 | 14001015 |
| Base 6 | 3341356 | 3341556 |
| Base 7 | 1450167 | 1450347 |
| Base 8 | 667538 | 667678 |
| Base 9 | 425359 | 425489 |
| Base 10 | 2813910 | 2815110 |
| Base 11 | 1a16111 | 1a17211 |
| Base 12 | 1434b12 | 1435b12 |
| Base 13 | ca6713 | ca7613 |
| Base 14 | a37d14 | a38b14 |
| Base 15 | 850e15 | 851b15 |
| Base 16 | 6deb16 | 6df716 |