Compare 121721 vs 121997
| Property | 121721 | 121997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1217211 | 1219971 |
| Prime factorization | 121721 | 121997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 121721 | 1, 121997 |
| Number of properties | 6 | 8 |
| Additive primes | 4722nd | |
| Chen primes | 4968th | 4978th |
| Cousin primes (2nd member) | 1430th | |
| Harmonic primes | 4329th | |
| Isolated primes | 8579th | 8594th |
| Left-truncatable primes | 348th | |
| Primes | 11456th | 11475th |
| Pythagorean primes | 5698th | 5707th |
| Restricted left-truncatable primes | 32nd | |
| Sexy primes (1st member) | 2865th | |
| Roman numberals | ||
| Base 2 | 111011011011110012 | 111011100100011012 |
| Base 3 | 200112220123 | 200121001023 |
| Base 4 | 1312313214 | 1313020314 |
| Base 5 | 123433415 | 124004425 |
| Base 6 | 23353056 | 23404456 |
| Base 7 | 10146057 | 10154517 |
| Base 8 | 3555718 | 3562158 |
| Base 9 | 2048659 | 2053129 |
| Base 10 | 12172110 | 12199710 |
| Base 11 | 834a611 | 8372711 |
| Base 12 | 5a53512 | 5a72512 |
| Base 13 | 4353213 | 436b513 |
| Base 14 | 3250514 | 3266114 |
| Base 15 | 260eb15 | 2623215 |
| Base 16 | 1db7916 | 1dc8d16 |