Compare 409 vs 415
| Property | 409 | 415 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 4091 | 51 × 831 |
| Prime factorization | 409 | 5 × 83 |
| Divisors count | 2 | 4 |
| Divisors | 1, 409 | 1, 5, 83, 415 |
| Number of properties | 9 | 1 |
| 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 | 131st | |
| Ulam primes | 11th | |
| Roman numberals | CDIX | CDXV |
| Base 2 | 1100110012 | 1100111112 |
| Base 3 | 1200113 | 1201013 |
| Base 4 | 121214 | 121334 |
| Base 5 | 31145 | 31305 |
| Base 6 | 15216 | 15316 |
| Base 7 | 11237 | 11327 |
| Base 8 | 6318 | 6378 |
| Base 9 | 5049 | 5119 |
| Base 10 | 40910 | 41510 |
| Base 11 | 34211 | 34811 |
| Base 12 | 2a112 | 2a712 |
| Base 13 | 25613 | 25c13 |
| Base 14 | 21314 | 21914 |
| Base 15 | 1c415 | 1ca15 |
| Base 16 | 19916 | 19f16 |