Compare 661411 vs 661421
| Property | 661411 | 661421 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 231 × 1491 × 1931 | 6614211 |
| Prime factorization | 23 × 149 × 193 | 661421 |
| Divisors count | 8 | 2 |
| Divisors | 1, 23, 149, 193, 3427, 4439, 28757, 661411 | 1, 661421 |
| Number of properties | 0 | 5 |
| Cousin primes (2nd member) | 5786th | |
| Happy primes | 7610th | |
| Isolated primes | 42096th | |
| Primes | 53679th | |
| Sophie germain primes | 5457th | |
| Roman numberals | ||
| Base 2 | 101000010111101000112 | 101000010111101011012 |
| Base 3 | 10201210212013 | 10201210220023 |
| Base 4 | 22011322034 | 22011322314 |
| Base 5 | 1321311215 | 1321311415 |
| Base 6 | 221020316 | 221020456 |
| Base 7 | 54232127 | 54232257 |
| Base 8 | 24136438 | 24136558 |
| Base 9 | 12172519 | 12172629 |
| Base 10 | 66141110 | 66142110 |
| Base 11 | 411a2311 | 411a3211 |
| Base 12 | 27a91712 | 27a92512 |
| Base 13 | 1a208a13 | 1a209713 |
| Base 14 | 13307914 | 13308514 |
| Base 15 | d0e9115 | d0e9b15 |
| Base 16 | a17a316 | a17ad16 |