Compare 1397 vs 1409
| Property | 1397 | 1409 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 1271 | 14091 |
| Prime factorization | 11 × 127 | 1409 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 127, 1397 | 1, 1409 |
| Number of properties | 1 | 8 |
| Chen primes | 146th | |
| Emirps | 66th | |
| Isolated primes | 132nd | |
| Primes | 223rd | |
| Proth primes | 20th | |
| Pythagorean primes | 110th | |
| Semiprimes | 414th | |
| Sophie germain primes | 46th | |
| Super primes | 48th | |
| Roman numberals | MCCCXCVII | MCDIX |
| Base 2 | 101011101012 | 101100000012 |
| Base 3 | 12202023 | 12210123 |
| Base 4 | 1113114 | 1120014 |
| Base 5 | 210425 | 211145 |
| Base 6 | 102456 | 103056 |
| Base 7 | 40347 | 40527 |
| Base 8 | 25658 | 26018 |
| Base 9 | 18229 | 18359 |
| Base 10 | 139710 | 140910 |
| Base 11 | 106011 | 107111 |
| Base 12 | 98512 | 99512 |
| Base 13 | 83613 | 84513 |
| Base 14 | 71b14 | 72914 |
| Base 15 | 63215 | 63e15 |
| Base 16 | 57516 | 58116 |