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Last Non-Zero Digits of 90 Factorial by Andrei Catalin Ilie is a document available to read on EtoBox.

What is Last Non-Zero Digits of 90 Factorial about?

This document discusses two irrational numbers related to factorials and exponents. It defines the "factorial number" F as the infinite decimal where each digit is the last non-zero digit of n!. Similarly, it defines the "power number" P where each digit is the last non-zero digit of nn. Though F and P exhibit patterns, the document proves they are irrational by showing there are always new patterns emerging at larger scales. It provides two lemmas about the properties of the last non-zero digit function to

Author

Andrei Catalin Ilie

Language

EN