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Carol number

From Wiktionary, the free dictionary

English

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Etymology

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First studied by Cletus Emmanuel, who named it after a friend, Carol G. Kirnon.

Noun

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Carol number (plural Carol numbers)

  1. (mathematics) An integer of the form .
    • 2009, The Philosophers' Magazine - Issue 47, page 4:
      Mathematically, it is actually interesting in all sorts of ways, being both a Keith number and a Carol number.
    • 2014, Rajesh Kumar Thakur, The Power of Mathematical Numbers, page 131:
      [] 7. There are 47 occurrences of 47 in the first thousand prime numbers. 8. The atomic number of Silver is 47. 9. It is a Carol number. []
    • 2019, Dr. Ir. Maarten Looijen, Over getallen gesproken - Talking about numbers, page 70:
      In 2007 the largest Carol number was found for n = 253987, consisting of 152916 digits, by using the programs MultiSieve and PrimeFormGW.
    • 2021, Elena Deza, Mersenne Numbers And Fermat Numbers, page 136:
      For the binary representation of the -th Carol number is consecutive unities, a single zero in the middle, and more consecutive unities, or to put it algebraically,