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1234567890 = The pandigital number with the digits in order. 3816547290 = The polydivisible pandigital number; the only pandigital number where the first n digits are divisible by n. 9814072356 = The largest pandigital square without redundant digits. It is the square of 99066. 9876543210 = The largest pandigital number without redundant digits.
Harry wants to create an article on the pandigital number 1023458967. The only property of the number that he knows about is that it's a pandigital number. 1023458967 is a pandigital number. Start with 10 7 points. Harry finds an entry on pandigital numbers in Eric W. Weisstein's CRC Concise Encyclopedia of Mathematics. He ignores the fact that ...
Polydivisible number. In mathematics a polydivisible number (or magic number) is a number in a given number base with digits abcde... that has the following properties: [ 1] Its first digit a is not 0. The number formed by its first two digits ab is a multiple of 2. The number formed by its first three digits abc is a multiple of 3.
A permanent account number ( PAN) is a ten-character alphanumeric identifier Foundational ID, issued in the form of a laminated "PAN card", by the Indian Income Tax Department, to any person who applies for it or to whom the department allots the number without an application. It can also be obtained in the form of a PDF file known as e-PAN ...
An abundant number whose abundance is greater than any lower number is called a highly abundant number, and one whose relative abundance (i.e. s(n)/n ) is greater than any lower number is called a superabundant number; Every integer greater than 20161 can be written as the sum of two abundant numbers. The largest even number that is not the sum ...
In number theory, a narcissistic number [1] [2] (also known as a pluperfect digital invariant (PPDI), [3] an Armstrong number [4] (after Michael F. Armstrong) [5] or a plus perfect number) [6] in a given number base is a number that is the sum of its own digits each raised to the power of the number of digits.
The Stirling number {} is the number of ways to partition a set of cardinality n into exactly k nonempty subsets. Thus, in the equation relating the Bell numbers to the Stirling numbers, each partition counted on the left hand side of the equation is counted in exactly one of the terms of the sum on the right hand side, the one for which k is ...
A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situations the card number is referred to as a bank card number. The card number is primarily a card ...