Compare 661421 vs 661426
| Property | 661421 | 661426 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6614211 | 21 × 431 × 76911 |
| Prime factorization | 661421 | 2 × 43 × 7691 |
| Divisors count | 2 | 8 |
| Divisors | 1, 661421 | 1, 2, 43, 86, 7691, 15382, 330713, 661426 |
| Number of properties | 5 | 0 |
| Cousin primes (2nd member) | 5786th | |
| Happy primes | 7610th | |
| Isolated primes | 42096th | |
| Primes | 53679th | |
| Sophie germain primes | 5457th | |
| Roman numberals | ||
| Base 2 | 101000010111101011012 | 101000010111101100102 |
| Base 3 | 10201210220023 | 10201210220213 |
| Base 4 | 22011322314 | 22011323024 |
| Base 5 | 1321311415 | 1321312015 |
| Base 6 | 221020456 | 221020546 |
| Base 7 | 54232257 | 54232337 |
| Base 8 | 24136558 | 24136628 |
| Base 9 | 12172629 | 12172679 |
| Base 10 | 66142110 | 66142610 |
| Base 11 | 411a3211 | 411a3711 |
| Base 12 | 27a92512 | 27a92a12 |
| Base 13 | 1a209713 | 1a209c13 |
| Base 14 | 13308514 | 13308a14 |
| Base 15 | d0e9b15 | d0ea115 |
| Base 16 | a17ad16 | a17b216 |