Compare 660661 vs 660669
| Property | 660661 | 660669 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6606611 | 31 × 1911 × 11531 |
| Prime factorization | 660661 | 3 × 191 × 1153 |
| Divisors count | 2 | 8 |
| Divisors | 1, 660661 | 1, 3, 191, 573, 1153, 3459, 220223, 660669 |
| Number of properties | 3 | 0 |
| Centered decagonal primes | 153rd | |
| Primes | 53621st | |
| Twin primes (2nd member) | 5785th | |
| Roman numberals | ||
| Base 2 | 101000010100101101012 | 101000010100101111012 |
| Base 3 | 10201200202213 | 10201200210203 |
| Base 4 | 22011023114 | 22011023314 |
| Base 5 | 1321201215 | 1321201345 |
| Base 6 | 220543416 | 220543536 |
| Base 7 | 54210617 | 54211027 |
| Base 8 | 24122658 | 24122758 |
| Base 9 | 12162279 | 12162369 |
| Base 10 | 66066110 | 66066910 |
| Base 11 | 41140111 | 41140911 |
| Base 12 | 27a3b112 | 27a3b912 |
| Base 13 | 1a193113 | 1a193913 |
| Base 14 | 132aa114 | 132aa914 |
| Base 15 | d0b4115 | d0b4915 |
| Base 16 | a14b516 | a14bd16 |