Compare 639451 vs 640009
| Property | 639451 | 640009 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6394511 | 6400091 |
| Prime factorization | 639451 | 640009 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639451 | 1, 640009 |
| Number of properties | 3 | 6 |
| Additive primes | 20351st | |
| Chen primes | 20378th | |
| Happy primes | 7413th | |
| Isolated primes | 40782nd | |
| Lucky primes | 5973rd | 5978th |
| Primes | 52033rd | 52076th |
| Twin primes (2nd member) | 5632nd | |
| Roman numberals | ||
| Base 2 | 100111000001110110112 | 100111000100000010012 |
| Base 3 | 10121110111013 | 10121112210013 |
| Base 4 | 21300131234 | 21301000214 |
| Base 5 | 1304303015 | 1304400145 |
| Base 6 | 214122316 | 214150016 |
| Base 7 | 53022017 | 53036267 |
| Base 8 | 23407338 | 23420118 |
| Base 9 | 11741419 | 11748319 |
| Base 10 | 63945110 | 64000910 |
| Base 11 | 3a747a11 | 3a793711 |
| Base 12 | 26a07712 | 26a46112 |
| Base 13 | 19509713 | 19540613 |
| Base 14 | 12907114 | 12934d14 |
| Base 15 | c970115 | c997415 |
| Base 16 | 9c1db16 | 9c40916 |