Compare 81131 vs 81223
| Property | 81131 | 81223 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 811311 | 812231 |
| Prime factorization | 81131 | 81223 |
| Divisors count | 2 | 2 |
| Divisors | 1, 81131 | 1, 81223 |
| Number of properties | 4 | 5 |
| Happy primes | 1234th | |
| Harmonic primes | 2996th | 3001st |
| Isolated primes | 5897th | 5903rd |
| Left-truncatable primes | 300th | |
| Primes | 7942nd | 7950th |
| Sophie germain primes | 987th | |
| Roman numberals | ||
| Base 2 | 100111100111010112 | 100111101010001112 |
| Base 3 | 110100212123 | 110101020213 |
| Base 4 | 1033032234 | 1033110134 |
| Base 5 | 100440115 | 100443435 |
| Base 6 | 14233356 | 14240116 |
| Base 7 | 4553517 | 4555427 |
| Base 8 | 2363538 | 2365078 |
| Base 9 | 1332559 | 1333679 |
| Base 10 | 8113110 | 8122310 |
| Base 11 | 55a5611 | 5602a11 |
| Base 12 | 3ab4b12 | 3b00712 |
| Base 13 | 2ac0b13 | 2ac7c13 |
| Base 14 | 217d114 | 2185914 |
| Base 15 | 1908b15 | 190ed15 |
| Base 16 | 13ceb16 | 13d4716 |