Compare 161221 vs 161407
| Property | 161221 | 161407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1612211 | 1614071 |
| Prime factorization | 161221 | 161407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 161221 | 1, 161407 |
| Number of properties | 5 | 7 |
| Additive primes | 6065th | 6071st |
| Cousin primes (1st member) | 1792nd | |
| Emirps | 3255th | |
| Happy primes | 2289th | |
| Isolated primes | 11163rd | 11176th |
| Long primes | 5527th | |
| Lucky primes | 1908th | |
| Primes | 14786th | 14801st |
| Pythagorean primes | 7376th | |
| Roman numberals | ||
| Base 2 | 1001110101110001012 | 1001110110011111112 |
| Base 3 | 220120110113 | 220121020013 |
| Base 4 | 2131130114 | 2131213334 |
| Base 5 | 201243415 | 201311125 |
| Base 6 | 32422216 | 32431316 |
| Base 7 | 12410147 | 12414017 |
| Base 8 | 4727058 | 4731778 |
| Base 9 | 2651349 | 2653619 |
| Base 10 | 16122110 | 16140710 |
| Base 11 | 10014511 | 1002a411 |
| Base 12 | 7937112 | 794a712 |
| Base 13 | 584c813 | 5860c13 |
| Base 14 | 42a7b14 | 42b7114 |
| Base 15 | 32b8115 | 32c5715 |
| Base 16 | 275c516 | 2767f16 |