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75
From OeisWiki
75 is an integer, the number of orderings of four objects with ties allowed.
Contents
Membership in core sequences
Odd numbers | ..., 69, 71, 73, 75, 77, 79, 81, ... | A005843 |
Composite numbers | ..., 70, 72, 74, 75, 76, 77, 78, ... | A002808 |
Deficient numbers | ..., 71, 73, 74, 75, 76, 77, 79, ... | A005100 |
Lucky numbers | ..., 67, 69, 73, 75, 79, 87, 93, ... | A000959 |
Loeschian numbers | ..., 64, 67, 73, 75, 76, 79, 81, ... | A003136 |
Fubini numbers | 1, 1, 3, 13, 75, 541, 4683, ... | A000670 |
Sequences pertaining to 75
Multiples of 75 | 75, 150, 225, 300, 375, 450, 525, 600, 675, 750, 825, 900, 975, 1050, ... | |
sequence beginning at 75 | 75, 226, 113, 340, 170, 85, 256, 128, 64, 32, 16, 8, 4, 2, 1, 4, 2, 1, ... | A258056 |
Partitions of 75
[FINISH WRITING]
Roots and powers of 75
In the table below, irrational numbers are given truncated to eight decimal places.
TABLE GOES HERE
Values for number theoretic functions with 75 as an argument
TABLE GOES HERE
Factorization of 75 in some quadratic integer rings
PLACEHOLDER
TABLE GOES HERE
Representation of 75 in various bases
Base | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
Representation | 1001011 | 2220 | 1023 | 250 | 203 | 135 | 113 | 83 | 75 | 69 | 63 | 5A | 55 | 50 | 4B | 47 | 43 | 3I | 3F |
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 |