Compare 201911 vs 201920
| Property | 201911 | 201920 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 8 |
| Prime factorization | 2019111 | 26 × 51 × 6311 |
| Prime factorization | 201911 | 2 × 2 × 2 × 2 × 2 × 2 × 5 × 631 |
| Divisors count | 2 | 28 |
| Divisors | 1, 201911 | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 631, 1262, 2524, 3155, 5048, 6310, 10096, 12620, 20192, 25240, 40384, 50480, 100960, 201920 |
| Number of properties | 4 | 0 |
| Chen primes | 7584th | |
| Cousin primes (2nd member) | 2153rd | |
| Isolated primes | 13794th | |
| Primes | 18139th | |
| Roman numberals | ||
| Base 2 | 1100010100101101112 | 1100010100110000002 |
| Base 3 | 1010202220123 | 1010202221123 |
| Base 4 | 3011023134 | 3011030004 |
| Base 5 | 224301215 | 224301405 |
| Base 6 | 41544356 | 41544526 |
| Base 7 | 15004437 | 15004557 |
| Base 8 | 6122678 | 6123008 |
| Base 9 | 3368659 | 3368759 |
| Base 10 | 20191110 | 20192010 |
| Base 11 | 12877611 | 12878411 |
| Base 12 | 98a1b12 | 98a2812 |
| Base 13 | 70b9813 | 70ba413 |
| Base 14 | 5382314 | 5382c14 |
| Base 15 | 3ec5b15 | 3ec6515 |
| Base 16 | 314b716 | 314c016 |