Compare 661139 vs 661147
| Property | 661139 | 661147 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6611391 | 171 × 388911 |
| Prime factorization | 661139 | 17 × 38891 |
| Divisors count | 2 | 4 |
| Divisors | 1, 661139 | 1, 17, 38891, 661147 |
| Number of properties | 4 | 1 |
| Chen primes | 20993rd | |
| Isolated primes | 42080th | |
| Primes | 53661st | |
| Safe primes | 3099th | |
| Semiprimes | 141467th | |
| Roman numberals | ||
| Base 2 | 101000010110100100112 | 101000010110100110112 |
| Base 3 | 10201202201223 | 10201202202213 |
| Base 4 | 22011221034 | 22011221234 |
| Base 5 | 1321240245 | 1321240425 |
| Base 6 | 221004556 | 221005116 |
| Base 7 | 54223437 | 54223547 |
| Base 8 | 24132238 | 24132338 |
| Base 9 | 12168189 | 12168279 |
| Base 10 | 66113910 | 66114710 |
| Base 11 | 4117a611 | 41180311 |
| Base 12 | 27a72b12 | 27a73712 |
| Base 13 | 1a1c0b13 | 1a1c1613 |
| Base 14 | 132d2314 | 132d2b14 |
| Base 15 | d0d5e15 | d0d6715 |
| Base 16 | a169316 | a169b16 |