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  2. Mertens function - Wikipedia

    en.wikipedia.org/wiki/Mertens_function

    In number theory, the Mertens function is defined for all positive integers n as = = (), where () is the Möbius function. The function is named in honour of Franz Mertens. This definition can be extended to positive real numbers as follows:

  3. Mertens' theorems - Wikipedia

    en.wikipedia.org/wiki/Mertens'_theorems

    Mertens' proof does not appeal to any unproved hypothesis (in 1874), and only to elementary real analysis. It comes 22 years before the first proof of the prime number theorem which, by contrast, relies on a careful analysis of the behavior of the Riemann zeta function as a function of a complex variable. Mertens' proof is in that respect ...

  4. Franz Mertens - Wikipedia

    en.wikipedia.org/wiki/Franz_Mertens

    Franz Mertens (20 March 1840 – 5 March 1927) (also known as Franciszek Mertens) was a Polish mathematician. He was born in Schroda in the Grand Duchy of Posen, Kingdom of Prussia (now Środa Wielkopolska, Poland) and died in Vienna, Austria. The Mertens function M(x) is the sum function for the Möbius function, in the theory of arithmetic ...

  5. Abel's summation formula - Wikipedia

    en.wikipedia.org/wiki/Abel's_summation_formula

    for any real number . Fix real numbers <, and let be a continuously differentiable function ... is Mertens function and () = = = +. This ...

  6. 363 (number) - Wikipedia

    en.wikipedia.org/wiki/363_(number)

    It is an odd, composite, positive, real integer, composed of a prime (3) and a prime squared (11 2). 363 is a deficient number and a perfect totient number. 363 is a palindromic number in bases 3, 10, 11 and 32. 363 is a repdigit (BB) in base 32. The Mertens function returns 0. [1] Any subset of its digits is divisible by three.

  7. Meertens number - Wikipedia

    en.wikipedia.org/wiki/Meertens_number

    A Meertens number is a sociable Meertens number with =, and a amicable Meertens number is a sociable Meertens number with =. The number of iterations i {\displaystyle i} needed for F b i ( n ) {\displaystyle F_{b}^{i}(n)} to reach a fixed point is the Meertens function's persistence of n {\displaystyle n} , and undefined if it never reaches a ...

  8. 150 (number) - Wikipedia

    en.wikipedia.org/wiki/150_(number)

    150 is the sum of eight consecutive primes (7 + 11 + 13 + 17 + 19 + 23 + 29 + 31). Given 150, the Mertens function returns 0. [1]150 is conjectured to be the only minimal difference greater than 1 of any increasing arithmetic progression of n primes (in this case, n = 7) that is not a primorial (a product of the first m primes).

  9. 1000 (number) - Wikipedia

    en.wikipedia.org/wiki/1000_(number)

    1255 = Mertens function zero, number of ways to write 23 as an orderless product of orderless sums, [109] number of partitions of 23 [202] 1256 = 1 × 2 × (5 2) 2 + 6, [203] Mertens function zero; 1257 = number of lattice points inside a circle of radius 20 [120] 1258 = 1 × 2 × (5 2) 2 + 8, [203] Mertens function zero; 1259 = highly ...