Problem 1071. Next Lower Power of B

@bmtran (Bryant Tran)

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Given a number n and a base B greater than 1, return the lowest integer power of B that is less than or equal to n.

Example:

    B = 4;
    n = 53;
    npb = lastpowb(B,n);

outputs

    npb = 2

See also: nextpow2, nextpowb

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174 Solutions

108 Solvers

Last Solution submitted on Mar 05, 2026

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Problem Comments

2 Comments

Aurelien Queffurust on 6 Dec 2012

Where did you find nextpowb?

@bmtran (Bryant Tran) on 7 Dec 2012

http://www.mathworks.com/matlabcentral/cody/problems/1070-next-higher-power-of-b

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