Compare 661139 vs 661141
| Property | 661139 | 661141 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6611391 | 131 × 508571 |
| Prime factorization | 661139 | 13 × 50857 |
| Divisors count | 2 | 4 |
| Divisors | 1, 661139 | 1, 13, 50857, 661141 |
| Number of properties | 4 | 1 |
| Chen primes | 20993rd | |
| Isolated primes | 42080th | |
| Primes | 53661st | |
| Safe primes | 3099th | |
| Semiprimes | 141465th | |
| Roman numberals | ||
| Base 2 | 101000010110100100112 | 101000010110100101012 |
| Base 3 | 10201202201223 | 10201202202013 |
| Base 4 | 22011221034 | 22011221114 |
| Base 5 | 1321240245 | 1321240315 |
| Base 6 | 221004556 | 221005016 |
| Base 7 | 54223437 | 54223457 |
| Base 8 | 24132238 | 24132258 |
| Base 9 | 12168189 | 12168219 |
| Base 10 | 66113910 | 66114110 |
| Base 11 | 4117a611 | 4117a811 |
| Base 12 | 27a72b12 | 27a73112 |
| Base 13 | 1a1c0b13 | 1a1c1013 |
| Base 14 | 132d2314 | 132d2514 |
| Base 15 | d0d5e15 | d0d6115 |
| Base 16 | a169316 | a169516 |