Compare 640247 vs 640669
| Property | 640247 | 640669 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6402471 | 6406691 |
| Prime factorization | 640247 | 640669 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640247 | 1, 640669 |
| Number of properties | 5 | 6 |
| Additive primes | 20362nd | 20372nd |
| Chen primes | 20388th | 20396th |
| Primes | 52097th | 52126th |
| Prime triplets (3rd member) | 2063rd | |
| Sexy primes (2nd member) | 11293rd | |
| Twin primes (1st member) | 5635th | |
| Twin primes (2nd member) | 5638th | |
| Ulam primes | 3818th | |
| Roman numberals | ||
| Base 2 | 100111000100111101112 | 100111000110100111012 |
| Base 3 | 10121120202123 | 10121122111113 |
| Base 4 | 21301033134 | 21301221314 |
| Base 5 | 1304414425 | 1310001345 |
| Base 6 | 214200356 | 214220216 |
| Base 7 | 53044167 | 53055617 |
| Base 8 | 23423678 | 23432358 |
| Base 9 | 11752259 | 11757449 |
| Base 10 | 64024710 | 64066910 |
| Base 11 | 3a803311 | 3a838711 |
| Base 12 | 26a61b12 | 26a91112 |
| Base 13 | 19555a13 | 1957c313 |
| Base 14 | 12947d14 | 1296a114 |
| Base 15 | c9a8215 | c9c6415 |
| Base 16 | 9c4f716 | 9c69d16 |