2219844666811981651

This number is a composite.

221984466 6811981651

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Call this number p and you get the offset d, where 10^319+d starts the smallest 320-digit prime septuplet for the pattern {0,2,6,8,12,18,20}. [Luhn]

Submitted: 2019-04-18 09:26:42; Last Modified: 2019-04-18 14:00:29.