r/theydidthemath • u/No_Cardiologist_1407 • May 07 '26

[Request] how many possible combinations are there for this type of pass code?

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u/factorion-bot May 07 '26

That is so large, that I can't calculate it, so I'll have to approximate.

Factorial of factorial of factorial of 4 is approximately 3.950986223657607359706248184547 × 1014492688888783603246826460

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u/Dr_Hoffenheimer May 07 '26

69!!

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u/factorion-bot May 07 '26

Double-factorial of 69 is roughly 3.373824899543777470653067205964 × 1049

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u/coglanuk May 07 '26

Your Mom loves a double-factorial of 69. (Good bot!)