Compare 419 vs 821
| Property | 419 | 821 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4191 | 8211 |
| Prime factorization | 419 | 821 |
| Divisors count | 2 | 2 |
| Divisors | 1, 419 | 1, 821 |
| Number of properties | 6 | 10 |
| Additive primes | 75th | |
| Chen primes | 58th | 97th |
| Good primes | 26th | 40th |
| Long primes | 30th | 50th |
| Primes | 81st | 142nd |
| Prime quadruplets (1st member) | 5th | |
| Prime triplets (1st member) | 25th | |
| Pythagorean primes | 69th | |
| Sexy primes (1st member) | 64th | |
| Sophie germain primes | 22nd | |
| Twin primes (1st member) | 22nd | 32nd |
| Roman numberals | CDXIX | DCCCXXI |
| Base 2 | 1101000112 | 11001101012 |
| Base 3 | 1201123 | 10101023 |
| Base 4 | 122034 | 303114 |
| Base 5 | 31345 | 112415 |
| Base 6 | 15356 | 34456 |
| Base 7 | 11367 | 22527 |
| Base 8 | 6438 | 14658 |
| Base 9 | 5159 | 11129 |
| Base 10 | 41910 | 82110 |
| Base 11 | 35111 | 68711 |
| Base 12 | 2ab12 | 58512 |
| Base 13 | 26313 | 4b213 |
| Base 14 | 21d14 | 42914 |
| Base 15 | 1ce15 | 39b15 |
| Base 16 | 1a316 | 33516 |