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Forum: And now for something completely different 2021-09-22, 19:06
Replies: 13
Views: 815
Posted By bur
The length has been corrected, now I can sleep...

The length has been corrected, now I can sleep peacefully.


Thanks for the explanations about the necessity of an odd number of digits. It's always fascinating how much can be deduced about...
Forum: And now for something completely different 2021-09-17, 17:06
Replies: 13
Views: 815
Posted By bur
Palindrome prime number of digits is always odd (except 11, and this is true in any base)

This newly discovered largest known Palindrome prime was reported by Propper & Batalov:

10^1234567 - 20342924302 · 10^617278 - 1 (https://primes.utm.edu/primes/page.php?id=132715)

It's shown as...
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