Compare 407 vs 409
| Property | 407 | 409 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 371 | 4091 |
| Prime factorization | 11 × 37 | 409 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 37, 407 | 1, 409 |
| Number of properties | 1 | 9 |
| Additive primes | 47th | |
| Centered triangular primes | 5th | |
| Chen primes | 57th | |
| Happy primes | 22nd | |
| Isolated primes | 39th | |
| Lucky primes | 22nd | |
| Primes | 80th | |
| Pythagorean primes | 39th | |
| Semiprimes | 128th | |
| Ulam primes | 11th | |
| Roman numberals | CDVII | CDIX |
| Base 2 | 1100101112 | 1100110012 |
| Base 3 | 1200023 | 1200113 |
| Base 4 | 121134 | 121214 |
| Base 5 | 31125 | 31145 |
| Base 6 | 15156 | 15216 |
| Base 7 | 11217 | 11237 |
| Base 8 | 6278 | 6318 |
| Base 9 | 5029 | 5049 |
| Base 10 | 40710 | 40910 |
| Base 11 | 34011 | 34211 |
| Base 12 | 29b12 | 2a112 |
| Base 13 | 25413 | 25613 |
| Base 14 | 21114 | 21314 |
| Base 15 | 1c215 | 1c415 |
| Base 16 | 19716 | 19916 |