Compare 642487 vs 642881
| Property | 642487 | 642881 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6424871 | 6428811 |
| Prime factorization | 642487 | 642881 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642487 | 1, 642881 |
| Number of properties | 4 | 6 |
| Additive primes | 20423rd | 20433rd |
| Chen primes | 20439th | 20450th |
| Cousin primes (2nd member) | 5645th | |
| Isolated primes | 40953rd | 40972nd |
| Primes | 52254th | 52281st |
| Sophie germain primes | 5326th | |
| Roman numberals | ||
| Base 2 | 100111001101101101112 | 100111001111010000012 |
| Base 3 | 10121220222113 | 10121222121023 |
| Base 4 | 21303123134 | 21303310014 |
| Base 5 | 1310244225 | 1310330115 |
| Base 6 | 214342516 | 214401456 |
| Base 7 | 53140667 | 53152017 |
| Base 8 | 23466678 | 23475018 |
| Base 9 | 11782849 | 11787729 |
| Base 10 | 64248710 | 64288110 |
| Base 11 | 3a978a11 | 3aa00811 |
| Base 12 | 26b98712 | 27005512 |
| Base 13 | 19659113 | 19680513 |
| Base 14 | 12a1dd14 | 12a40114 |
| Base 15 | ca57715 | ca73b15 |
| Base 16 | 9cdb716 | 9cf4116 |