Compare 639851 vs 640631
| Property | 639851 | 640631 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6398511 | 6406311 |
| Prime factorization | 639851 | 640631 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639851 | 1, 640631 |
| Number of properties | 6 | 3 |
| Chen primes | 20371st | |
| Isolated primes | 40849th | |
| Primes | 52064th | 52122nd |
| Prime triplets (1st member) | 2062nd | |
| Sexy primes (1st member) | 11284th | |
| Sophie germain primes | 5305th | 5310th |
| Twin primes (1st member) | 5631st | |
| Roman numberals | ||
| Base 2 | 100111000011011010112 | 100111000110011101112 |
| Base 3 | 10121112010123 | 10121122100023 |
| Base 4 | 21300312234 | 21301213134 |
| Base 5 | 1304334015 | 1310000115 |
| Base 6 | 214141356 | 214215156 |
| Base 7 | 53033127 | 53055057 |
| Base 8 | 23415538 | 23431678 |
| Base 9 | 11746359 | 11757029 |
| Base 10 | 63985110 | 64063110 |
| Base 11 | 3a780311 | 3a835211 |
| Base 12 | 26a34b12 | 26a89b12 |
| Base 13 | 19531413 | 19579413 |
| Base 14 | 12927914 | 12967514 |
| Base 15 | c98bb15 | c9c3b15 |
| Base 16 | 9c36b16 | 9c67716 |