Compare 1213 vs 1973
| Property | 1213 | 1973 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12131 | 19731 |
| Prime factorization | 1213 | 1973 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1213 | 1, 1973 |
| Number of properties | 7 | 7 |
| Additive primes | 106th | |
| Cousin primes (1st member) | 45th | |
| Emirps | 52nd | |
| Good primes | 49th | 61st |
| Harmonic primes | 111th | |
| Isolated primes | 117th | 179th |
| Primes | 198th | 298th |
| Pythagorean primes | 97th | 145th |
| Sexy primes (1st member) | 126th | |
| Sophie germain primes | 60th | |
| Roman numberals | MCCXIII | MCMLXXIII |
| Base 2 | 100101111012 | 111101101012 |
| Base 3 | 11222213 | 22010023 |
| Base 4 | 1023314 | 1323114 |
| Base 5 | 143235 | 303435 |
| Base 6 | 53416 | 130456 |
| Base 7 | 33527 | 55167 |
| Base 8 | 22758 | 36658 |
| Base 9 | 15879 | 26329 |
| Base 10 | 121310 | 197310 |
| Base 11 | a0311 | 153411 |
| Base 12 | 85112 | 118512 |
| Base 13 | 72413 | b8a13 |
| Base 14 | 62914 | a0d14 |
| Base 15 | 55d15 | 8b815 |
| Base 16 | 4bd16 | 7b516 |