Problem 46054. Count trailing zeros in a primorial

Solution 2785240

Submitted on 5 Aug 2020 by Jean-Marie Sainthillier

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Test	Status	Code Input and Output
1	Pass	n = 1; y_correct = 0; assert(isequal(primorialTrailingZeros(n),y_correct))
2	Pass	n = 2; y_correct = 0; assert(isequal(primorialTrailingZeros(n),y_correct))
3	Pass	n = 5; y_correct = 1; assert(isequal(primorialTrailingZeros(n),y_correct))
4	Pass	n = 10; y_correct = sin((n+3)*pi/2); assert(isequal(primorialTrailingZeros(n),y_correct))
5	Pass	n = 100; y_correct = sum(1./2.^(1:n)); assert(isequal(primorialTrailingZeros(n),y_correct))
6	Pass	n = 1e4; y_correct = besselj(mod(n,10),prod(num2str(n)'-'0')); assert(isequal(primorialTrailingZeros(n),y_correct))
7	Pass	n = 1e6; f = [factor(log10(n)) 3 7 7 89]; y_correct = length(primes(n))/prod(f); assert(isequal(primorialTrailingZeros(n),y_correct))

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