Compare 661005 vs 661009
| Property | 661005 | 661009 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 32 × 51 × 371 × 3971 | 6610091 |
| Prime factorization | 3 × 3 × 5 × 37 × 397 | 661009 |
| Divisors count | 24 | 2 |
| Divisors | 1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 397, 555, 1191, 1665, 1985, 3573, 5955, 14689, 17865, 44067, 73445, 132201, 220335, 661005 | 1, 661009 |
| Number of properties | 0 | 3 |
| Isolated primes | 42071st | |
| Lucky primes | 6149th | |
| Primes | 53648th | |
| Roman numberals | ||
| Base 2 | 101000010110000011012 | 101000010110000100012 |
| Base 3 | 10201202012003 | 10201202012113 |
| Base 4 | 22011200314 | 22011201014 |
| Base 5 | 1321230105 | 1321230145 |
| Base 6 | 221001136 | 221001216 |
| Base 7 | 54220627 | 54220667 |
| Base 8 | 24130158 | 24130218 |
| Base 9 | 12166509 | 12166549 |
| Base 10 | 66100510 | 66100910 |
| Base 11 | 41169411 | 41169811 |
| Base 12 | 27a63912 | 27a64112 |
| Base 13 | 1a1b3713 | 1a1b3b13 |
| Base 14 | 132c6914 | 132c6d14 |
| Base 15 | d0cc015 | d0cc415 |
| Base 16 | a160d16 | a161116 |