Compare 640237 vs 640249
| Property | 640237 | 640249 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 131 × 171 × 28971 | 6402491 |
| Prime factorization | 13 × 17 × 2897 | 640249 |
| Divisors count | 8 | 2 |
| Divisors | 1, 13, 17, 221, 2897, 37661, 49249, 640237 | 1, 640249 |
| Number of properties | 0 | 3 |
| Primes | 52098th | |
| Twin primes (2nd member) | 5635th | |
| Ulam primes | 3819th | |
| Roman numberals | ||
| Base 2 | 100111000100111011012 | 100111000100111110012 |
| Base 3 | 10121120201113 | 10121120202213 |
| Base 4 | 21301032314 | 21301033214 |
| Base 5 | 1304414225 | 1304414445 |
| Base 6 | 214200216 | 214200416 |
| Base 7 | 53044037 | 53044217 |
| Base 8 | 23423558 | 23423718 |
| Base 9 | 11752149 | 11752279 |
| Base 10 | 64023710 | 64024910 |
| Base 11 | 3a802411 | 3a803511 |
| Base 12 | 26a61112 | 26a62112 |
| Base 13 | 19555013 | 19555c13 |
| Base 14 | 12947314 | 12948114 |
| Base 15 | c9a7715 | c9a8415 |
| Base 16 | 9c4ed16 | 9c4f916 |