Problem 46057. Find the last non-zero digit in a primorial

• Created by ChrisR
• Appears in Prime Numbers I

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Cody Problem 45251 asked us to find the last non-zero digit in a factorial. For this problem consider the primorial #, the product of primes up to and including the nth prime . For example, for n = 12, the primorial is 7420738134810, whose last non-zero digit is 1.

Find the last non-zero digit in the primorial #.

See also Cody Problems 46054 "Count trailing zeros in a primorial" and 46060 "Identify primorial primes".

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Solution Stats

31.82% Correct | 68.18% Incorrect

• 66 Solutions
• 16 Solvers

Last Solution submitted on Sep 08, 2024

Last 200 Solutions

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