Compare 639639 vs 639647
| Property | 639639 | 639647 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 5 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 32 × 71 × 111 × 131 × 711 | 6396471 |
| Prime factorization | 3 × 3 × 7 × 11 × 13 × 71 | 639647 |
| Divisors count | 48 | 2 |
| Divisors | 1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 71, 77, 91, 99, 117, 143, 213, 231, 273, 429, 497, 639, 693, 781, 819, 923, 1001, 1287, 1491, 2343, 2769, 3003, 4473, 5467, 6461, 7029, 8307, 9009, 10153, 16401, 19383, 30459, 49203, 58149, 71071, 91377, 213213, 639639 | 1, 639647 |
| Number of properties | 0 | 4 |
| Centered heptagonal primes | 87th | |
| Chen primes | 20362nd | |
| Isolated primes | 40794th | |
| Primes | 52049th | |
| Roman numberals | ||
| Base 2 | 100111000010100101112 | 100111000010100111112 |
| Base 3 | 10121111021003 | 10121111021223 |
| Base 4 | 21300221134 | 21300221334 |
| Base 5 | 1304320245 | 1304320425 |
| Base 6 | 214131436 | 214131556 |
| Base 7 | 53025607 | 53026017 |
| Base 8 | 23412278 | 23412378 |
| Base 9 | 11743709 | 11743789 |
| Base 10 | 63963910 | 63964710 |
| Base 11 | 3a763011 | 3a763811 |
| Base 12 | 26a1b312 | 26a1bb12 |
| Base 13 | 1951b013 | 1951b813 |
| Base 14 | 12916714 | 12917114 |
| Base 15 | c97c915 | c97d215 |
| Base 16 | 9c29716 | 9c29f16 |