Compare 661955 vs 661961
| Property | 661955 | 661961 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 71 × 189131 | 6619611 |
| Prime factorization | 5 × 7 × 18913 | 661961 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 7, 35, 18913, 94565, 132391, 661955 | 1, 661961 |
| Number of properties | 0 | 4 |
| Additive primes | 20969th | |
| Isolated primes | 42126th | |
| Primes | 53715th | |
| Sophie germain primes | 5462nd | |
| Roman numberals | ||
| Base 2 | 101000011001110000112 | 101000011001110010012 |
| Base 3 | 10201220002123 | 10201220010023 |
| Base 4 | 22012130034 | 22012130214 |
| Base 5 | 1321403105 | 1321403215 |
| Base 6 | 221043356 | 221043456 |
| Base 7 | 54246207 | 54246267 |
| Base 8 | 24147038 | 24147118 |
| Base 9 | 12180259 | 12180329 |
| Base 10 | 66195510 | 66196110 |
| Base 11 | 41237811 | 41238311 |
| Base 12 | 27b0ab12 | 27b0b512 |
| Base 13 | 1a23b813 | 1a23c113 |
| Base 14 | 13334714 | 13334d14 |
| Base 15 | d120515 | d120b15 |
| Base 16 | a19c316 | a19c916 |