Compare 208991 vs 209381
| Property | 208991 | 209381 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2089911 | 2093811 |
| Prime factorization | 208991 | 209381 |
| Divisors count | 2 | 2 |
| Divisors | 1, 208991 | 1, 209381 |
| Number of properties | 7 | 6 |
| Additive primes | 7551st | 7562nd |
| Chen primes | 7818th | 7834th |
| Isolated primes | 14260th | |
| Primes | 18717th | 18753rd |
| Prime triplets (1st member) | 871st | |
| Pythagorean primes | 9365th | |
| Sexy primes (1st member) | 4448th | |
| Sophie germain primes | 2127th | 2132nd |
| Twin primes (1st member) | 2244th | |
| Roman numberals | ||
| Base 2 | 1100110000010111112 | 1100110001111001012 |
| Base 3 | 1011212001023 | 1011220122123 |
| Base 4 | 3030011334 | 3030132114 |
| Base 5 | 231414315 | 232000115 |
| Base 6 | 42513156 | 42532056 |
| Base 7 | 15302067 | 15313047 |
| Base 8 | 6301378 | 6307458 |
| Base 9 | 3476129 | 3481859 |
| Base 10 | 20899110 | 20938110 |
| Base 11 | 13302211 | 13334711 |
| Base 12 | a0b3b12 | a120512 |
| Base 13 | 7418313 | 743c313 |
| Base 14 | 5623d14 | 5643b14 |
| Base 15 | 41dcb15 | 4208b15 |
| Base 16 | 3305f16 | 331e516 |