Problem 615

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Joined: Sat Dec 02, 2017 7:44 pm

Problem 615

Post by beco » Mon Dec 04, 2017 10:03 pm

Congratulations to the first 100!

I've tried, but due to lots of not so much prime factors, I couldn't!

I'm specially amused by the time achieved by the Japanese flag user uwi. Just 10 minutes!

That got me thinking...

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