Compare 640139 vs 640307
| Property | 640139 | 640307 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401391 | 6403071 |
| Prime factorization | 640139 | 640307 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640139 | 1, 640307 |
| Number of properties | 4 | 5 |
| Additive primes | 20356th | |
| Chen primes | 20383rd | 20390th |
| Cousin primes (2nd member) | 5634th | |
| Isolated primes | 40825th | 40833rd |
| Primes | 52088th | 52104th |
| Safe primes | 3019th | |
| Roman numberals | ||
| Base 2 | 100111000100100010112 | 100111000101001100112 |
| Base 3 | 10121120022123 | 10121121000023 |
| Base 4 | 21301020234 | 21301103034 |
| Base 5 | 1304410245 | 1304422125 |
| Base 6 | 214153356 | 214202156 |
| Base 7 | 53042037 | 53045337 |
| Base 8 | 23422138 | 23424638 |
| Base 9 | 11750859 | 11753029 |
| Base 10 | 64013910 | 64030710 |
| Base 11 | 3a7a4511 | 3a808811 |
| Base 12 | 26a54b12 | 26a66b12 |
| Base 13 | 1954a613 | 1955a513 |
| Base 14 | 12940314 | 1294c314 |
| Base 15 | c9a0e15 | c9ac215 |
| Base 16 | 9c48b16 | 9c53316 |