11131...38997 (42-digits)

This number is a composite.

11 1317192329 3137414347 5359616771 7379838997

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The ordered concatenation of all of the double-digit prime numbers is also prime. [Loungrides]

Submitted: 2024-01-08 08:59:04; Last Modified: 2024-01-08 12:39:23.