Compare 161221 vs 161911
| Property | 161221 | 161911 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1612211 | 1619111 |
| Prime factorization | 161221 | 161911 |
| Divisors count | 2 | 2 |
| Divisors | 1, 161221 | 1, 161911 |
| Number of properties | 5 | 5 |
| Additive primes | 6065th | 6086th |
| Isolated primes | 11163rd | 11204th |
| Lucky primes | 1908th | 1917th |
| Primes | 14786th | 14843rd |
| Pythagorean primes | 7376th | |
| Super primes | 1739th | |
| Roman numberals | ||
| Base 2 | 1001110101110001012 | 1001111000011101112 |
| Base 3 | 220120110113 | 220200022013 |
| Base 4 | 2131130114 | 2132013134 |
| Base 5 | 201243415 | 201401215 |
| Base 6 | 32422216 | 32453316 |
| Base 7 | 12410147 | 12430217 |
| Base 8 | 4727058 | 4741678 |
| Base 9 | 2651349 | 2660819 |
| Base 10 | 16122110 | 16191110 |
| Base 11 | 10014511 | 10071211 |
| Base 12 | 7937112 | 7984712 |
| Base 13 | 584c813 | 5890913 |
| Base 14 | 42a7b14 | 4301114 |
| Base 15 | 32b8115 | 32e9115 |
| Base 16 | 275c516 | 2787716 |