12345...15161 (24-digits)

This number is a prime.

1234 5678910111 2131415161

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123456789101112131415161 is a prime number that is simultaneously a Champernowne prime and a Sophie Germain prime. [Pace]

Submitted: 2025-11-24 16:07:52; Last Modified: 2026-01-18 14:40:06.