Compare 660661 vs 660672
| Property | 660661 | 660672 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 10 |
| Prime factorization | 6606611 | 26 × 32 × 311 × 371 |
| Prime factorization | 660661 | 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 31 × 37 |
| Divisors count | 2 | 84 |
| Divisors | 1, 660661 | 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 37, 48, 62, 64, 72, 74, 93, 96, 111, 124, 144, 148, 186, 192, 222, 248, 279, 288, 296, 333, 372, 444, 496, 558, 576, 592, 666, 744, 888, 992, 1116, 1147, 1184, 1332, 1488, 1776, 1984, 2232, 2294, 2368, 2664, 2976, 3441, 3552, 4464, 4588, 5328, 5952, 6882, 7104, 8928, 9176, 10323, 10656, 13764, 17856, 18352, 20646, 21312, 27528, 36704, 41292, 55056, 73408, 82584, 110112, 165168, 220224, 330336, 660672 |
| Number of properties | 3 | 0 |
| Centered decagonal primes | 153rd | |
| Primes | 53621st | |
| Twin primes (2nd member) | 5785th | |
| Roman numberals | ||
| Base 2 | 101000010100101101012 | 101000010100110000002 |
| Base 3 | 10201200202213 | 10201200211003 |
| Base 4 | 22011023114 | 22011030004 |
| Base 5 | 1321201215 | 1321201425 |
| Base 6 | 220543416 | 220544006 |
| Base 7 | 54210617 | 54211057 |
| Base 8 | 24122658 | 24123008 |
| Base 9 | 12162279 | 12162409 |
| Base 10 | 66066110 | 66067210 |
| Base 11 | 41140111 | 41141111 |
| Base 12 | 27a3b112 | 27a40012 |
| Base 13 | 1a193113 | 1a193c13 |
| Base 14 | 132aa114 | 132aac14 |
| Base 15 | d0b4115 | d0b4c15 |
| Base 16 | a14b516 | a14c016 |