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# 145

Please do not rely on any information it contains.

145 is an integer.

## Membership in core sequences

 Odd numbers ..., 139, 141, 143, 145, 147, 149, 151, ... A005408 Composite numbers ..., 142, 143, 144, 145, 146, 147, 148, ... A002808 Semiprimes ..., 141, 142, 143, 145, 146, 155, 158, ... A001358 Squarefree numbers ..., 141, 142, 143, 145, 146, 149, 151, ... A005117

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## Partitions of 145

There are 24908858009 partitions of 145.

## Roots and powers of 145

In the table below, irrational numbers are given truncated to eight decimal places.

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## Values for number theoretic functions with 145 as an argument

 ${\displaystyle \mu (145)}$ 1 ${\displaystyle M(145)}$ 0 See A028442 for other zeroes of the Mertens function. ${\displaystyle \pi (145)}$ 34 ${\displaystyle \sigma _{1}(145)}$ 180 ${\displaystyle \sigma _{0}(145)}$ 4 ${\displaystyle \phi (145)}$ 112 ${\displaystyle \Omega (145)}$ 2 ${\displaystyle \omega (145)}$ 2 ${\displaystyle \lambda (145)}$ This is the Carmichael lambda function. ${\displaystyle \lambda (145)}$ This is the Liouville lambda function.

PLACEHOLDER

PLACEHOLDER

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## Representation of 145 in various bases

 Base 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Representation 10010001 12101 2101 1040 401 265 221 171 145 122 101 B2 A5 9A 91 89 81 7C 75

Note that 145 is a factorion in base 10 (see A014080) since 1! + 4! + 5! = 1 + 24 + 120 = 145.

 ${\displaystyle -1}$ 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