Compare 639997 vs 640139
| Property | 639997 | 640139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399971 | 6401391 |
| Prime factorization | 639997 | 640139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639997 | 1, 640139 |
| Number of properties | 4 | 4 |
| Additive primes | 20349th | 20356th |
| Chen primes | 20383rd | |
| Isolated primes | 40813th | 40825th |
| Lucky primes | 5977th | |
| Primes | 52074th | 52088th |
| Roman numberals | ||
| Base 2 | 100111000011111111012 | 100111000100100010112 |
| Base 3 | 10121112201213 | 10121120022123 |
| Base 4 | 21300333314 | 21301020234 |
| Base 5 | 1304344425 | 1304410245 |
| Base 6 | 214145416 | 214153356 |
| Base 7 | 53036117 | 53042037 |
| Base 8 | 23417758 | 23422138 |
| Base 9 | 11748179 | 11750859 |
| Base 10 | 63999710 | 64013910 |
| Base 11 | 3a792611 | 3a7a4511 |
| Base 12 | 26a45112 | 26a54b12 |
| Base 13 | 1953c713 | 1954a613 |
| Base 14 | 12934114 | 12940314 |
| Base 15 | c996715 | c9a0e15 |
| Base 16 | 9c3fd16 | 9c48b16 |