The Books Insiderindependent audiobook data
The Number Concept by Levi Leonard Conant Ph.D.

The Number Concept: Audiobook

According to The Books Insider's catalog data, The Number Concept runs 5.5 hours as an unabridged audiobook, narrated by Mark Walkman (about 3.7 hours at 1.5× playback speed).

5.5listening hrs
Economicsstore shelf
2020released
Free for new listeners

The instrument When will you finish it?

Based on 5.5 hours of listening.

Days to finish The Number Concept at common listening paces
Your paceYou'll finish in
30 min / day11 days
1 hour / day6 days
2 hours / day3 days
1 hour / day at 1.5×4 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 5.5 hours, it is shorter than 74% of the 1,568 Economics audiobooks in our catalog.

Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.

About this listen

The Number Concept is an audiobook by Levi Leonard Conant Ph.D.: a 5.5-hour unabridged recording, read by Mark Walkman, released August 30, 2020, on the Economics and Non-Fiction shelves.

The listen at a glance

Length
5.5 hrs
Narrated by
Mark Walkman
Released
August 30, 2020
Format
Unabridged audiobook
Language
English
Store shelves
Economics, Non-Fiction
ISBN
9798868777370

How to listen to The Number Concept free

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Questions listeners ask

How long is The Number Concept as an audiobook?

The Number Concept runs 5.5 hours unabridged. At 1.5× speed that drops to roughly 3.7 hours.

Is The Number Concept free as an audiobook?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates The Number Concept?

The Number Concept is narrated by Mark Walkman.