Compare 1409 vs 1621
| Property | 1409 | 1621 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 14091 | 16211 |
| Prime factorization | 1409 | 1621 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1409 | 1, 1621 |
| Number of properties | 8 | 8 |
| Chen primes | 146th | 163rd |
| Emirps | 66th | |
| Harmonic primes | 89th | |
| Isolated primes | 132nd | |
| Long primes | 101st | |
| Primes | 223rd | 257th |
| Proth primes | 20th | |
| Pythagorean primes | 110th | 123rd |
| Sexy primes (1st member) | 111th | |
| Sophie germain primes | 46th | |
| Super primes | 48th | 55th |
| Twin primes (2nd member) | 52nd | |
| Roman numberals | MCDIX | MDCXXI |
| Base 2 | 101100000012 | 110010101012 |
| Base 3 | 12210123 | 20200013 |
| Base 4 | 1120014 | 1211114 |
| Base 5 | 211145 | 224415 |
| Base 6 | 103056 | 113016 |
| Base 7 | 40527 | 45047 |
| Base 8 | 26018 | 31258 |
| Base 9 | 18359 | 22019 |
| Base 10 | 140910 | 162110 |
| Base 11 | 107111 | 124411 |
| Base 12 | 99512 | b3112 |
| Base 13 | 84513 | 97913 |
| Base 14 | 72914 | 83b14 |
| Base 15 | 63e15 | 73115 |
| Base 16 | 58116 | 65516 |