41 (number)

41 is the natural number following 40 and preceding 42.

Related Topics:
Natural number - 40 - 42

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{{numbers_40s}}

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Cardinal forty-one

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Ordinal41st(forty-first)

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Factorizationprime

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Roman numeralXLI

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Binary101001

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Hexadecimal29

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Forty-one is the 13th smallest prime number. The next is forty-three, with which it comprises a twin prime. Forty-one is also a Sophie Germain prime and a Newman-Shanks-Williams prime. 41 is the smallest Sophie Germain prime to start a Cunningham chain of the first kind of three terms, {41, 83, 167}. It is an Eisenstein prime with no imaginary part and real part of the form 3n - 1.

Related Topics:
Prime number - Forty-three - Twin prime - Sophie Germain prime - Newman-Shanks-Williams prime - Cunningham chain - Eisenstein prime

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The number figures in the polynomial f(n) = n2 + n + 41, which yields primes for 0

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Forty-one is the sum of two squares, 42 + 52, as well as the sum of the first six prime numbers, and also the sum of three primes (11 + 13 + 17). It is a centered square number.

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