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11: 39 916 800: 12: 479 001 600: 13: 6 227 020 800: 14: 87 178 291 200: 15: 1 307 674 ... The factorial number system is a mixed radix notation for numbers in which ...
The factorial number system is sometimes defined with the 0! place omitted because it is always zero (sequence A007623 in the OEIS). In this article, a factorial number representation will be flagged by a subscript "!". In addition, some examples will have digits delimited by a colon. For example, 3:4:1:0:1:0! stands for
De Moivre gave an approximate rational-number expression for the natural logarithm of the constant. Stirling's contribution consisted of showing that the constant is precisely 2 π {\displaystyle {\sqrt {2\pi }}} .
A natural number is a sociable factorion if it is a periodic point for , where = for a positive integer, and forms a cycle of period . A factorion is a sociable factorion with k = 1 {\displaystyle k=1} , and a amicable factorion is a sociable factorion with k = 2 {\displaystyle k=2} .
In mathematics, the double factorial of a number n, ... the double factorial may be expressed in terms of k-permutations of 2k [1] [11] or a falling factorial as ...
This is the minimum number of characters needed to encode a 32 bit number into 5 printable characters in a process similar to MIME-64 encoding, since 85 5 is only slightly bigger than 2 32. Such method is 6.7% more efficient than MIME-64 which encodes a 24 bit number into 4 printable characters. 89
A Gaussian integer is either the zero, one of the four units (±1, ±i), a Gaussian prime or composite.The article is a table of Gaussian Integers x + iy followed either by an explicit factorization or followed by the label (p) if the integer is a Gaussian prime.
A factorial prime is a prime number that is one less or one more than a factorial (all factorials greater than 1 are even). [1] ... 11, 12, 14) are ...