Compare 161221 vs 161281
| Property | 161221 | 161281 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1612211 | 1612811 |
| Prime factorization | 161221 | 161281 |
| Divisors count | 2 | 2 |
| Divisors | 1, 161221 | 1, 161281 |
| Number of properties | 5 | 6 |
| Additive primes | 6065th | 6068th |
| Isolated primes | 11163rd | 11168th |
| Lucky primes | 1908th | 1909th |
| Primes | 14786th | 14791st |
| Proth primes | 122nd | |
| Pythagorean primes | 7376th | 7379th |
| Roman numberals | ||
| Base 2 | 1001110101110001012 | 1001110110000000012 |
| Base 3 | 220120110113 | 220120201013 |
| Base 4 | 2131130114 | 2131200014 |
| Base 5 | 201243415 | 201301115 |
| Base 6 | 32422216 | 32424016 |
| Base 7 | 12410147 | 12411317 |
| Base 8 | 4727058 | 4730018 |
| Base 9 | 2651349 | 2652119 |
| Base 10 | 16122110 | 16128110 |
| Base 11 | 10014511 | 10019a11 |
| Base 12 | 7937112 | 7940112 |
| Base 13 | 584c813 | 5854313 |
| Base 14 | 42a7b14 | 42ac114 |
| Base 15 | 32b8115 | 32bc115 |
| Base 16 | 275c516 | 2760116 |