emirp
Sign in to saveAlso known as reversible prime, Emirps
An emirp (pronounced or , an anadrome of prime) is a prime number that results in a different prime when its decimal digits (digits in base 10) are reversed. This definition excludes the related palindromic primes. The term reversible prime is used to mean the same as emirp, but may also, ambiguously, include the palindromic primes.
Wikidata facts
- Subclass of
- prime number
- Named after
- prime number
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- named by
- Jeremiah Farrell
- maintained by WikiProject
- WikiProject Mathematics
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Encyclopedic overview
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An emirp (pronounced or , an anadrome of prime) is a prime number that results in a different prime when its decimal digits (digits in base 10) are reversed. This definition excludes the related palindromic primes. The term reversible prime is used to mean the same as emirp, but may also, ambiguously, include the palindromic primes.
The sequence of emirps begins 13, 17, 31, 37, 71, 73, 79, 97, 107, 113, 149, 157, 167, 179, 199, 311, 337, 347, 359, 389, 701, 709, 733, 739, 743, 751, 761, 769, 907, 937, 941, 953, 967, 971, 983, 991, ... .
Excerpted from Wikipedia’s “emirp” article, available under the CC BY-SA 4.0 licence.