Compare 161981 vs 161987
| Property | 161981 | 161987 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 431 × 37671 | 71 × 731 × 3171 |
| Prime factorization | 43 × 3767 | 7 × 73 × 317 |
| Divisors count | 4 | 8 |
| Divisors | 1, 43, 3767, 161981 | 1, 7, 73, 317, 511, 2219, 23141, 161987 |
| Number of properties | 1 | 0 |
| Semiprimes | 36999th | |
| Roman numberals | ||
| Base 2 | 1001111000101111012 | 1001111000110000112 |
| Base 3 | 220200120223 | 220200121123 |
| Base 4 | 2132023314 | 2132030034 |
| Base 5 | 201404115 | 201404225 |
| Base 6 | 32455256 | 32455356 |
| Base 7 | 12431517 | 12431607 |
| Base 8 | 4742758 | 4743038 |
| Base 9 | 2661689 | 2661759 |
| Base 10 | 16198110 | 16198710 |
| Base 11 | 10077611 | 10078111 |
| Base 12 | 798a512 | 798ab12 |
| Base 13 | 5896113 | 5896713 |
| Base 14 | 4306114 | 4306714 |
| Base 15 | 32edb15 | 32ee215 |
| Base 16 | 278bd16 | 278c316 |