Compare 642407 vs 642418
| Property | 642407 | 642418 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6424071 | 21 × 71 × 458871 |
| Prime factorization | 642407 | 2 × 7 × 45887 |
| Divisors count | 2 | 8 |
| Divisors | 1, 642407 | 1, 2, 7, 14, 45887, 91774, 321209, 642418 |
| Number of properties | 6 | 0 |
| Additive primes | 20422nd | |
| Chen primes | 20437th | |
| Cousin primes (2nd member) | 5643rd | |
| Isolated primes | 40949th | |
| Primes | 52250th | |
| Safe primes | 3025th | |
| Roman numberals | ||
| Base 2 | 100111001101011001112 | 100111001101011100102 |
| Base 3 | 10121220122123 | 10121220200213 |
| Base 4 | 21303112134 | 21303113024 |
| Base 5 | 1310241125 | 1310241335 |
| Base 6 | 214340356 | 214340546 |
| Base 7 | 53136237 | 53136407 |
| Base 8 | 23465478 | 23465628 |
| Base 9 | 11781859 | 11782079 |
| Base 10 | 64240710 | 64241810 |
| Base 11 | 3a971711 | 3a972711 |
| Base 12 | 26b91b12 | 26b92a12 |
| Base 13 | 19652c13 | 19653a13 |
| Base 14 | 12a18314 | 12a19014 |
| Base 15 | ca52215 | ca52d15 |
| Base 16 | 9cd6716 | 9cd7216 |