Compare 645431 vs 645442
| Property | 645431 | 645442 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6454311 | 21 × 71 × 461031 |
| Prime factorization | 645431 | 2 × 7 × 46103 |
| Divisors count | 2 | 8 |
| Divisors | 1, 645431 | 1, 2, 7, 14, 46103, 92206, 322721, 645442 |
| Number of properties | 5 | 0 |
| Additive primes | 20515th | |
| Chen primes | 20525th | |
| Happy primes | 7473rd | |
| Primes | 52475th | |
| Twin primes (1st member) | 5671st | |
| Roman numberals | ||
| Base 2 | 100111011001001101112 | 100111011001010000102 |
| Base 3 | 10122101002123 | 10122101010213 |
| Base 4 | 21312103134 | 21312110024 |
| Base 5 | 1311232115 | 1311232325 |
| Base 6 | 215000356 | 215000546 |
| Base 7 | 53255037 | 53255207 |
| Base 8 | 23544678 | 23545028 |
| Base 9 | 11833259 | 11833379 |
| Base 10 | 64543110 | 64544210 |
| Base 11 | 400a1611 | 400a2611 |
| Base 12 | 27161b12 | 27162a12 |
| Base 13 | 197a1713 | 197a2513 |
| Base 14 | 12b30314 | 12b31014 |
| Base 15 | cb38b15 | cb39715 |
| Base 16 | 9d93716 | 9d94216 |