Compare 1638 vs 1642
Property | 1638 | 1642 |
---|---|---|
Type | composite number | semiprime |
Unique factors | 4 | 2 |
Total factors | 5 | 2 |
Prime factorization | 21 × 32 × 71 × 131 | 21 × 8211 |
Prime factorization | 2 × 3 × 3 × 7 × 13 | 2 × 821 |
Divisors count | 24 | 4 |
Divisors | 1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638 | 1, 2, 821, 1642 |
Number of properties | 0 | 1 |
Semiprimes | 471st | |
Roman numberals | MDCXXXVIII | MDCXLII |
Base 2 | 110011001102 | 110011010102 |
Base 3 | 20202003 | 20202113 |
Base 4 | 1212124 | 1212224 |
Base 5 | 230235 | 230325 |
Base 6 | 113306 | 113346 |
Base 7 | 45307 | 45347 |
Base 8 | 31468 | 31528 |
Base 9 | 22209 | 22249 |
Base 10 | 163810 | 164210 |
Base 11 | 125a11 | 126311 |
Base 12 | b4612 | b4a12 |
Base 13 | 99013 | 99413 |
Base 14 | 85014 | 85414 |
Base 15 | 74315 | 74715 |
Base 16 | 66616 | 66a16 |