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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.
Don't repeat yourself. " Don't repeat yourself " ( DRY) is a principle of software development aimed at reducing repetition of information which is likely to change, replacing it with abstractions that are less likely to change, or using data normalization which avoids redundancy in the first place. The DRY principle is stated as "Every piece ...
In number theory, a perfect digit-to-digit invariant ( PDDI; also known as a Munchausen number[ 1]) is a natural number in a given number base that is equal to the sum of its digits each raised to the power of itself. An example in base 10 is 3435, because . The term "Munchausen number" was coined by Dutch mathematician and software engineer ...
Fifth normal form ( 5NF ), also known as projection–join normal form ( PJ/NF ), is a level of database normalization designed to remove redundancy in relational databases recording multi-valued facts by isolating semantically related multiple relationships. A table is said to be in the 5NF if and only if every non-trivial join dependency in ...
1,069,863,695 = number of square (0,1)-matrices without zero rows and with exactly 9 entries equal to 1 ... 1,234,567,890 : pandigital number with the digits in order.
A new study shows that crows, in this case the carrion crow, can count out loud just like human toddlers. This discovery opens up new doors for more complex conversation among crows, who are also ...
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.
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 ...