Compare 661231 vs 661243
| Property | 661231 | 661243 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6612311 | 111 × 471 × 12791 |
| Prime factorization | 661231 | 11 × 47 × 1279 |
| Divisors count | 2 | 8 |
| Divisors | 1, 661231 | 1, 11, 47, 517, 1279, 14069, 60113, 661243 |
| Number of properties | 5 | 0 |
| Additive primes | 20951st | |
| Chen primes | 20995th | |
| Isolated primes | 42084th | |
| Primes | 53667th | |
| Sexy primes (1st member) | 11588th | |
| Roman numberals | ||
| Base 2 | 101000010110111011112 | 101000010110111110112 |
| Base 3 | 10201210010013 | 10201210011113 |
| Base 4 | 22011232334 | 22011233234 |
| Base 5 | 1321244115 | 1321244335 |
| Base 6 | 221011316 | 221011516 |
| Base 7 | 54225347 | 54225527 |
| Base 8 | 24133578 | 24133738 |
| Base 9 | 12170319 | 12170449 |
| Base 10 | 66123110 | 66124310 |
| Base 11 | 41187a11 | 41189011 |
| Base 12 | 27a7a712 | 27a7b712 |
| Base 13 | 1a1c7c13 | 1a1c8b13 |
| Base 14 | 132d8b14 | 132d9914 |
| Base 15 | d0dc115 | d0dcd15 |
| Base 16 | a16ef16 | a16fb16 |