Compare 19981 vs 19993
| Property | 19981 | 19993 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 131 × 291 × 531 | 199931 |
| Prime factorization | 13 × 29 × 53 | 19993 |
| Divisors count | 8 | 2 |
| Divisors | 1, 13, 29, 53, 377, 689, 1537, 19981 | 1, 19993 |
| Number of properties | 0 | 8 |
| Additive primes | 1050th | |
| Cousin primes (1st member) | 344th | |
| Long primes | 865th | |
| Lucky primes | 367th | |
| Primes | 2261st | |
| Prime triplets (2nd member) | 168th | |
| Pythagorean primes | 1124th | |
| Twin primes (2nd member) | 342nd | |
| Roman numberals | ||
| Base 2 | 1001110000011012 | 1001110000110012 |
| Base 3 | 10001020013 | 10001021113 |
| Base 4 | 103200314 | 103201214 |
| Base 5 | 11144115 | 11144335 |
| Base 6 | 2323016 | 2323216 |
| Base 7 | 1121537 | 1122017 |
| Base 8 | 470158 | 470318 |
| Base 9 | 303619 | 303749 |
| Base 10 | 1998110 | 1999310 |
| Base 11 | 1401511 | 1402611 |
| Base 12 | b69112 | b6a112 |
| Base 13 | 913013 | 913c13 |
| Base 14 | 73d314 | 740114 |
| Base 15 | 5dc115 | 5dcd15 |
| Base 16 | 4e0d16 | 4e1916 |