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  2. Palindromic number - Wikipedia

    en.wikipedia.org/wiki/Palindromic_number

    A number that is non-palindromic in all bases b in the range 2 ≤ b ≤ n − 2 can be called a strictly non-palindromic number. For example, the number 6 is written as "110" in base 2, "20" in base 3, and "12" in base 4, none of which are palindromes. All strictly non-palindromic numbers larger than 6 are prime.

  3. Palindromic prime - Wikipedia

    en.wikipedia.org/wiki/Palindromic_prime

    Palindromic primes: prime numbers whose decimal expansion is a palindrome In mathematics, a palindromic prime (sometimes called a palprime [ 1 ] ) is a prime number that is also a palindromic number .

  4. Palindrome - Wikipedia

    en.wikipedia.org/wiki/Palindrome

    The 9-letter word Rotavator, a trademarked name for an agricultural machine, is listed in dictionaries as being the longest single-word palindrome. The 9-letter term redivider is used by some writers, but appears to be an invented or derived term; only redivide and redivision appear in the Shorter Oxford English Dictionary; the 9-letter word ...

  5. List of English palindromic phrases - Wikipedia

    en.wikipedia.org/wiki/List_of_English...

    A palindrome is a word, number, phrase, or other sequence of symbols that reads the same backwards as forwards, such as the sentence: "A man, a plan, a canal – Panama". ". Following is a list of palindromic phrases of two or more words in the English language, found in multiple independent collections of palindromic phra

  6. List of palindromic places - Wikipedia

    en.wikipedia.org/wiki/List_of_palindromic_places

    Diacritics are marks placed on or near letters to give them a modified pronunciation. Some languages treat such as completely different letters; others treat them as variants of the base letter. The latter group is summarized here. Only place names where the language of the country is in the latter group are included here when diacritics make ...

  7. Category:Palindromes - Wikipedia

    en.wikipedia.org/wiki/Category:Palindromes

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  8. Longest palindromic substring - Wikipedia

    en.wikipedia.org/wiki/Longest_palindromic_substring

    Since the palindrome at the MirroredCenter is "aba" and extends beyond the boundaries of the "Old" palindrome, we know the longest palindrome at the second "b" can only extend up to the border of the "Old" palindrome. We know this because if the character after the "Old" palindrome had been an "a" instead of a "c", the "Old" palindrome would ...

  9. Belphegor's prime - Wikipedia

    en.wikipedia.org/wiki/Belphegor's_prime

    A Belphegor number is a palindromic number in the form of () ().The sequence of the first four Belphegor numbers is: ,,,, … Dubner noticed that 16661 is a prime number. By adding zeroes directly on both sides of the 666, Dubner found more palindromic prime numbers, including the Belphegor prime, which is second in the sequence.