Compare 661231 vs 661987
| Property | 661231 | 661987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6612311 | 6619871 |
| Prime factorization | 661231 | 661987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661231 | 1, 661987 |
| Number of properties | 5 | 5 |
| Additive primes | 20951st | 20970th |
| Chen primes | 20995th | 21009th |
| Isolated primes | 42084th | 42127th |
| Primes | 53667th | 53716th |
| Sexy primes (1st member) | 11588th | 11599th |
| Roman numberals | ||
| Base 2 | 101000010110111011112 | 101000011001111000112 |
| Base 3 | 10201210010013 | 10201220020013 |
| Base 4 | 22011232334 | 22012132034 |
| Base 5 | 1321244115 | 1321404225 |
| Base 6 | 221011316 | 221044316 |
| Base 7 | 54225347 | 54246647 |
| Base 8 | 24133578 | 24147438 |
| Base 9 | 12170319 | 12180619 |
| Base 10 | 66123110 | 66198710 |
| Base 11 | 41187a11 | 4123a711 |
| Base 12 | 27a7a712 | 27b11712 |
| Base 13 | 1a1c7c13 | 1a241113 |
| Base 14 | 132d8b14 | 13336b14 |
| Base 15 | d0dc115 | d122715 |
| Base 16 | a16ef16 | a19e316 |