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# Finding the rightmost non-zero digit of $$n!$$.

Feel free to ask queries and/or give feedbacks in the comments. New problems and examples are welcomed to be added to the wiki.

Note by Tapas Mazumdar
9 months ago

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2 \times 3 $$2 \times 3$$
2^{34} $$2^{34}$$
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\frac{2}{3} $$\frac{2}{3}$$
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Woah! This is probably the only article on the internet that teaches us this technique!

Bonus: can you generalize this to "find the last "m" rightmost non-zero digits of n!" ?

- 9 months ago

Seems like a great challenge to me! Let me think about it.

P.S. Thanks for the compliments. :)

- 8 months, 4 weeks ago

Thanks for creating this wonderful article! I've added your wiki page to the list of Number Theory wiki pages, under Rightmost non zero digit.

Staff - 8 months ago