Compare 814 vs 821
| Property | 814 | 821 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 111 × 371 | 8211 |
| Prime factorization | 2 × 11 × 37 | 821 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 11, 22, 37, 74, 407, 814 | 1, 821 |
| Number of properties | 0 | 10 |
| Additive primes | 75th | |
| Chen primes | 97th | |
| Good primes | 40th | |
| Long primes | 50th | |
| Primes | 142nd | |
| Prime quadruplets (1st member) | 5th | |
| Prime triplets (1st member) | 25th | |
| Pythagorean primes | 69th | |
| Sexy primes (1st member) | 64th | |
| Twin primes (1st member) | 32nd | |
| Roman numberals | DCCCXIV | DCCCXXI |
| Base 2 | 11001011102 | 11001101012 |
| Base 3 | 10100113 | 10101023 |
| Base 4 | 302324 | 303114 |
| Base 5 | 112245 | 112415 |
| Base 6 | 34346 | 34456 |
| Base 7 | 22427 | 22527 |
| Base 8 | 14568 | 14658 |
| Base 9 | 11049 | 11129 |
| Base 10 | 81410 | 82110 |
| Base 11 | 68011 | 68711 |
| Base 12 | 57a12 | 58512 |
| Base 13 | 4a813 | 4b213 |
| Base 14 | 42214 | 42914 |
| Base 15 | 39415 | 39b15 |
| Base 16 | 32e16 | 33516 |