Compare 639997 vs 640151
| Property | 639997 | 640151 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399971 | 6401511 |
| Prime factorization | 639997 | 640151 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639997 | 1, 640151 |
| Number of properties | 4 | 5 |
| Additive primes | 20349th | 20357th |
| Chen primes | 20384th | |
| Happy primes | 7414th | |
| Isolated primes | 40813th | |
| Lucky primes | 5977th | |
| Primes | 52074th | 52089th |
| Twin primes (1st member) | 5633rd | |
| Roman numberals | ||
| Base 2 | 100111000011111111012 | 100111000100100101112 |
| Base 3 | 10121112201213 | 10121120100223 |
| Base 4 | 21300333314 | 21301021134 |
| Base 5 | 1304344425 | 1304411015 |
| Base 6 | 214145416 | 214153556 |
| Base 7 | 53036117 | 53042217 |
| Base 8 | 23417758 | 23422278 |
| Base 9 | 11748179 | 11751089 |
| Base 10 | 63999710 | 64015110 |
| Base 11 | 3a792611 | 3a7a5611 |
| Base 12 | 26a45112 | 26a55b12 |
| Base 13 | 1953c713 | 1954b513 |
| Base 14 | 12934114 | 12941114 |
| Base 15 | c996715 | c9a1b15 |
| Base 16 | 9c3fd16 | 9c49716 |