Compare 640138 vs 640147
| Property | 640138 | 640147 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 1011 × 31691 | 2771 × 23111 |
| Prime factorization | 2 × 101 × 3169 | 277 × 2311 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 101, 202, 3169, 6338, 320069, 640138 | 1, 277, 2311, 640147 |
| Number of properties | 0 | 1 |
| Semiprimes | 137172nd | |
| Roman numberals | ||
| Base 2 | 100111000100100010102 | 100111000100100100112 |
| Base 3 | 10121120022113 | 10121120100113 |
| Base 4 | 21301020224 | 21301021034 |
| Base 5 | 1304410235 | 1304410425 |
| Base 6 | 214153346 | 214153516 |
| Base 7 | 53042027 | 53042147 |
| Base 8 | 23422128 | 23422238 |
| Base 9 | 11750849 | 11751049 |
| Base 10 | 64013810 | 64014710 |
| Base 11 | 3a7a4411 | 3a7a5211 |
| Base 12 | 26a54a12 | 26a55712 |
| Base 13 | 1954a513 | 1954b113 |
| Base 14 | 12940214 | 12940b14 |
| Base 15 | c9a0d15 | c9a1715 |
| Base 16 | 9c48a16 | 9c49316 |