Compare 639997 vs 640007
| Property | 639997 | 640007 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399971 | 6400071 |
| Prime factorization | 639997 | 640007 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639997 | 1, 640007 |
| Number of properties | 4 | 5 |
| Additive primes | 20349th | 20350th |
| Chen primes | 20377th | |
| Isolated primes | 40813th | |
| Lucky primes | 5977th | |
| Primes | 52074th | 52075th |
| Twin primes (1st member) | 5632nd | |
| Ulam primes | 3817th | |
| Roman numberals | ||
| Base 2 | 100111000011111111012 | 100111000100000001112 |
| Base 3 | 10121112201213 | 10121112202223 |
| Base 4 | 21300333314 | 21301000134 |
| Base 5 | 1304344425 | 1304400125 |
| Base 6 | 214145416 | 214145556 |
| Base 7 | 53036117 | 53036247 |
| Base 8 | 23417758 | 23420078 |
| Base 9 | 11748179 | 11748289 |
| Base 10 | 63999710 | 64000710 |
| Base 11 | 3a792611 | 3a793511 |
| Base 12 | 26a45112 | 26a45b12 |
| Base 13 | 1953c713 | 19540413 |
| Base 14 | 12934114 | 12934b14 |
| Base 15 | c996715 | c997215 |
| Base 16 | 9c3fd16 | 9c40716 |