Compare 661139 vs 664199
| Property | 661139 | 664199 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6611391 | 6641991 |
| Prime factorization | 661139 | 664199 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661139 | 1, 664199 |
| Number of properties | 4 | 5 |
| Chen primes | 20993rd | 21074th |
| Isolated primes | 42080th | 42252nd |
| Primes | 53661st | 53885th |
| Safe primes | 3099th | 3110th |
| Sexy primes (2nd member) | 11632nd | |
| Roman numberals | ||
| Base 2 | 101000010110100100112 | 101000100010100001112 |
| Base 3 | 10201202201223 | 10202020022223 |
| Base 4 | 22011221034 | 22020220134 |
| Base 5 | 1321240245 | 1322232445 |
| Base 6 | 221004556 | 221225556 |
| Base 7 | 54223437 | 54343047 |
| Base 8 | 24132238 | 24212078 |
| Base 9 | 12168189 | 12220889 |
| Base 10 | 66113910 | 66419910 |
| Base 11 | 4117a611 | 41402811 |
| Base 12 | 27a72b12 | 28045b12 |
| Base 13 | 1a1c0b13 | 1a342313 |
| Base 14 | 132d2314 | 1340ab14 |
| Base 15 | d0d5e15 | d1bee15 |
| Base 16 | a169316 | a228716 |