reversal
(another Prime Pages' Glossary entries)
The Prime Glossary
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

The reversal of a number abc... is ...cba. A reversible prime is a prime that remains prime when its digits are reversed. Reversible primes can be divided into two sets: emirps and palindromic primes.




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