Compare 639997 vs 640005
| Property | 639997 | 640005 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6399971 | 31 × 51 × 426671 |
| Prime factorization | 639997 | 3 × 5 × 42667 |
| Divisors count | 2 | 8 |
| Divisors | 1, 639997 | 1, 3, 5, 15, 42667, 128001, 213335, 640005 |
| Number of properties | 4 | 0 |
| Additive primes | 20349th | |
| Isolated primes | 40813th | |
| Lucky primes | 5977th | |
| Primes | 52074th | |
| Roman numberals | ||
| Base 2 | 100111000011111111012 | 100111000100000001012 |
| Base 3 | 10121112201213 | 10121112202203 |
| Base 4 | 21300333314 | 21301000114 |
| Base 5 | 1304344425 | 1304400105 |
| Base 6 | 214145416 | 214145536 |
| Base 7 | 53036117 | 53036227 |
| Base 8 | 23417758 | 23420058 |
| Base 9 | 11748179 | 11748269 |
| Base 10 | 63999710 | 64000510 |
| Base 11 | 3a792611 | 3a793311 |
| Base 12 | 26a45112 | 26a45912 |
| Base 13 | 1953c713 | 19540213 |
| Base 14 | 12934114 | 12934914 |
| Base 15 | c996715 | c997015 |
| Base 16 | 9c3fd16 | 9c40516 |