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The symbols '''log2''', '''lb''' or '''ld''' are used for the ''' | {{Wikipedia| Binary logarithm }} | ||
The symbols '''log2''', '''lb''', or '''ld''' are used for the '''binary logarithm''', also called '''dual logarithm''' or '''logarithm base two'''.{{clear}} | |||
== Log2 of the first primes == | == Log2 of the first primes == | ||
{| class="wikitable center-all" | |||
{| class="wikitable" | |- | ||
! [[ | ! [[Prime]] | ||
! | ! Log2 prime | ||
|- | |- | ||
| 2 | | 2 | ||
| 1 | | 1.000000000 | ||
|- | |- | ||
| 3 | | 3 | ||
| Line 38: | Line 39: | ||
|} | |} | ||
You can calculate the binary logarithm of n | You can calculate the binary logarithm of ''n'' using the identity: | ||
$$ \log_2(n) = \ln(n) / \ln(2) $$ | |||
[[Category:Math]] | [[Category:Math]] | ||
[[Category: | [[Category:Elementary math]] | ||
[[Category:Terms]] | [[Category:Terms]] | ||
{{Todo| improve synopsis }} | |||
Latest revision as of 13:09, 4 September 2025
The symbols log2, lb, or ld are used for the binary logarithm, also called dual logarithm or logarithm base two.
Log2 of the first primes
| Prime | Log2 prime |
|---|---|
| 2 | 1.000000000 |
| 3 | 1.584962501 |
| 5 | 2.321928095 |
| 7 | 2.807354922 |
| 11 | 3.459431619 |
| 13 | 3.700439718 |
| 17 | 4.087462841 |
| 19 | 4.247927513 |
| 23 | 4.523561956 |
| 29 | 4.857980995 |
You can calculate the binary logarithm of n using the identity:
$$ \log_2(n) = \ln(n) / \ln(2) $$