Compare 661117 vs 661123
| Property | 661117 | 661123 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6611171 | 2291 × 28871 |
| Prime factorization | 661117 | 229 × 2887 |
| Divisors count | 2 | 4 |
| Divisors | 1, 661117 | 1, 229, 2887, 661123 |
| Number of properties | 4 | 1 |
| Chen primes | 20991st | |
| Cousin primes (1st member) | 5784th | |
| Isolated primes | 42078th | |
| Primes | 53659th | |
| Semiprimes | 141459th | |
| Roman numberals | ||
| Base 2 | 101000010110011111012 | 101000010110100000112 |
| Base 3 | 10201202122113 | 10201202200013 |
| Base 4 | 22011213314 | 22011220034 |
| Base 5 | 1321234325 | 1321234435 |
| Base 6 | 221004216 | 221004316 |
| Base 7 | 54223127 | 54223217 |
| Base 8 | 24131758 | 24132038 |
| Base 9 | 12167849 | 12168019 |
| Base 10 | 66111710 | 66112310 |
| Base 11 | 41178611 | 41179111 |
| Base 12 | 27a71112 | 27a71712 |
| Base 13 | 1a1bc213 | 1a1bc813 |
| Base 14 | 132d0914 | 132d1114 |
| Base 15 | d0d4715 | d0d4d15 |
| Base 16 | a167d16 | a168316 |