This site is supported by donations to The OEIS Foundation.
128
From OeisWiki
128 is the seventh power of 2.
Contents
- 1 Membership in core sequences
- 2 Sequences pertaining to 128
- 3 Partitions of 128
- 4 Roots and powers of 128
- 5 Logarithms and 128th powers
- 6 Values for number theoretic functions with 128 as an argument
- 7 Factorization of 8 in some quadratic integer rings
- 8 Representation of 128 in various bases
- 9 See also
Membership in core sequences
Even numbers | ..., 122, 124, 126, 128, 130, 132, 134, ... | A005843 |
Composite numbers | ..., 124, 125, 126, 128, 129, 130, 132, ... | A002808 |
Powers of 2 | ..., 16, 32, 64, 128, 256, 512, 1024, ... | A000079 |
Numbers that are the sum of two squares | ..., 121, 122, 125, 128, 130, 136, 137, ... | A001481 |
Sequences pertaining to 128
Multiples of 128 | 0, 128, 256, 384, 512, 640, 768, 896, 1024, 1152, 1280, 1408, 1536, ... | |
sequence beginning at 75 | 75, 226, 113, 340, 170, 85, 256, 128, 64, 32, 16, 8, 4, 2, 1, 4, 2, 1, ... | A258056 |
sequence beginning at 87 | ..., 920, 460, 230, 115, 344, 172, 86, 43, 128, 64, 32, 16, 8, 4, 2, 1, ... | A008899 |
Partitions of 128
There are 4351078600 partitions of 128.
The Goldbach representations of 128 are: 109 + 19 = 97 + 31 = 67 + 61 = 128.
Roots and powers of 128
In the table below, irrational numbers are given truncated to eight decimal places.
TABLE GOES HERE
Logarithms and 128th powers
In the OEIS specifically and mathematics in general, refers to the natural logarithm of , whereas all other bases are specified with a subscript.
As above, irrational numbers in the following table are truncated to eight decimal places.
TABLE GOES HERE
Values for number theoretic functions with 128 as an argument
TABLE GOES HERE
Factorization of 8 in some quadratic integer rings
In , 128 has the prime factorization of 2 7. But it has different factorizations in some quadratic integer rings.
TABLE GOES HERE
Representation of 128 in various bases
TABLE GOES HERE
See also
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 |
40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 |
1729 |