Compare 639997 vs 640121
| Property | 639997 | 640121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399971 | 6401211 |
| Prime factorization | 639997 | 640121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639997 | 1, 640121 |
| Number of properties | 4 | 4 |
| Additive primes | 20349th | |
| Chen primes | 20382nd | |
| Isolated primes | 40813th | 40823rd |
| Lucky primes | 5977th | |
| Primes | 52074th | 52086th |
| Sexy primes (1st member) | 11286th | |
| Roman numberals | ||
| Base 2 | 100111000011111111012 | 100111000100011110012 |
| Base 3 | 10121112201213 | 10121120020123 |
| Base 4 | 21300333314 | 21301013214 |
| Base 5 | 1304344425 | 1304404415 |
| Base 6 | 214145416 | 214153056 |
| Base 7 | 53036117 | 53041467 |
| Base 8 | 23417758 | 23421718 |
| Base 9 | 11748179 | 11750659 |
| Base 10 | 63999710 | 64012110 |
| Base 11 | 3a792611 | 3a7a2911 |
| Base 12 | 26a45112 | 26a53512 |
| Base 13 | 1953c713 | 19549113 |
| Base 14 | 12934114 | 1293cd14 |
| Base 15 | c996715 | c99eb15 |
| Base 16 | 9c3fd16 | 9c47916 |