Compare 661949 vs 663407
| Property | 661949 | 663407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6619491 | 6634071 |
| Prime factorization | 661949 | 663407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661949 | 1, 663407 |
| Number of properties | 4 | 3 |
| Chen primes | 21008th | 21047th |
| Primes | 53713th | 53820th |
| Sophie germain primes | 5461st | |
| Twin primes (1st member) | 5795th | 5807th |
| Roman numberals | ||
| Base 2 | 101000011001101111012 | 101000011111011011112 |
| Base 3 | 10201220001223 | 10202010001223 |
| Base 4 | 22012123314 | 22013312334 |
| Base 5 | 1321402445 | 1322121125 |
| Base 6 | 221043256 | 221151556 |
| Base 7 | 54246117 | 54320637 |
| Base 8 | 24146758 | 24175578 |
| Base 9 | 12180189 | 12210189 |
| Base 10 | 66194910 | 66340710 |
| Base 11 | 41237211 | 41347811 |
| Base 12 | 27b0a512 | 27babb12 |
| Base 13 | 1a23b213 | 1a2c6413 |
| Base 14 | 13334114 | 133aa314 |
| Base 15 | d11ee15 | d187215 |
| Base 16 | a19bd16 | a1f6f16 |