Compare 1631 vs 1640
| Property | 1631 | 1640 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 5 |
| Prime factorization | 71 × 2331 | 23 × 51 × 411 |
| Prime factorization | 7 × 233 | 2 × 2 × 2 × 5 × 41 |
| Divisors count | 4 | 16 |
| Divisors | 1, 7, 233, 1631 | 1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640 |
| Number of properties | 1 | 0 |
| Semiprimes | 467th | |
| Roman numberals | MDCXXXI | MDCXL |
| Base 2 | 110010111112 | 110011010002 |
| Base 3 | 20201023 | 20202023 |
| Base 4 | 1211334 | 1212204 |
| Base 5 | 230115 | 230305 |
| Base 6 | 113156 | 113326 |
| Base 7 | 45207 | 45327 |
| Base 8 | 31378 | 31508 |
| Base 9 | 22129 | 22229 |
| Base 10 | 163110 | 164010 |
| Base 11 | 125311 | 126111 |
| Base 12 | b3b12 | b4812 |
| Base 13 | 98613 | 99213 |
| Base 14 | 84714 | 85214 |
| Base 15 | 73b15 | 74515 |
| Base 16 | 65f16 | 66816 |