Compare 661139 vs 663539
| Property | 661139 | 663539 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6611391 | 6635391 |
| Prime factorization | 661139 | 663539 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661139 | 1, 663539 |
| Number of properties | 4 | 5 |
| Chen primes | 20993rd | 21050th |
| Good primes | 2038th | |
| Isolated primes | 42080th | |
| Primes | 53661st | 53826th |
| Safe primes | 3099th | 3106th |
| Twin primes (1st member) | 5808th | |
| Roman numberals | ||
| Base 2 | 101000010110100100112 | 101000011111111100112 |
| Base 3 | 10201202201223 | 10202010121123 |
| Base 4 | 22011221034 | 22013333034 |
| Base 5 | 1321240245 | 1322131245 |
| Base 6 | 221004556 | 221155356 |
| Base 7 | 54223437 | 54323427 |
| Base 8 | 24132238 | 24177638 |
| Base 9 | 12168189 | 12211759 |
| Base 10 | 66113910 | 66353910 |
| Base 11 | 4117a611 | 41358811 |
| Base 12 | 27a72b12 | 27bbab12 |
| Base 13 | 1a1c0b13 | 1a303613 |
| Base 14 | 132d2314 | 133b5914 |
| Base 15 | d0d5e15 | d190e15 |
| Base 16 | a169316 | a1ff316 |