Compare 642239 vs 642247
| Property | 642239 | 642247 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 131 × 1271 × 3891 | 6422471 |
| Prime factorization | 13 × 127 × 389 | 642247 |
| Divisors count | 8 | 2 |
| Divisors | 1, 13, 127, 389, 1651, 5057, 49403, 642239 | 1, 642247 |
| Number of properties | 0 | 6 |
| Isolated primes | 40944th | |
| Lucky primes | 5999th | |
| Primes | 52243rd | |
| Sexy primes (1st member) | 11321st | |
| Sexy primes (2nd member) | 11320th | |
| Sexy prime triplets (2nd member) | 2077th | |
| Roman numberals | ||
| Base 2 | 100111001100101111112 | 100111001100110001112 |
| Base 3 | 10121212221223 | 10121212222213 |
| Base 4 | 21303023334 | 21303030134 |
| Base 5 | 1310224245 | 1310224425 |
| Base 6 | 214331556 | 214332116 |
| Base 7 | 53132637 | 53133047 |
| Base 8 | 23462778 | 23463078 |
| Base 9 | 11778789 | 11778879 |
| Base 10 | 64223910 | 64224710 |
| Base 11 | 3a958411 | 3a959111 |
| Base 12 | 26b7bb12 | 26b80712 |
| Base 13 | 19643013 | 19643813 |
| Base 14 | 12a0a314 | 12a0ab14 |
| Base 15 | ca45e15 | ca46715 |
| Base 16 | 9ccbf16 | 9ccc716 |