Compare 121985 vs 121997
| Property | 121985 | 121997 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 311 × 7871 | 1219971 |
| Prime factorization | 5 × 31 × 787 | 121997 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 31, 155, 787, 3935, 24397, 121985 | 1, 121997 |
| Number of properties | 0 | 8 |
| Additive primes | 4722nd | |
| Chen primes | 4978th | |
| Cousin primes (2nd member) | 1430th | |
| Isolated primes | 8594th | |
| Left-truncatable primes | 348th | |
| Primes | 11475th | |
| Pythagorean primes | 5707th | |
| Restricted left-truncatable primes | 32nd | |
| Roman numberals | ||
| Base 2 | 111011100100000012 | 111011100100011012 |
| Base 3 | 200120222223 | 200121001023 |
| Base 4 | 1313020014 | 1313020314 |
| Base 5 | 124004205 | 124004425 |
| Base 6 | 23404256 | 23404456 |
| Base 7 | 10154337 | 10154517 |
| Base 8 | 3562018 | 3562158 |
| Base 9 | 2052889 | 2053129 |
| Base 10 | 12198510 | 12199710 |
| Base 11 | 8371611 | 8372711 |
| Base 12 | 5a71512 | 5a72512 |
| Base 13 | 436a613 | 436b513 |
| Base 14 | 3265314 | 3266114 |
| Base 15 | 2622515 | 2623215 |
| Base 16 | 1dc8116 | 1dc8d16 |