Interesting FactsSome interesting facts about Science, some about D1 Solutions and some "Interesting, but useless information" (IBUI).

Number Category
19

The G-20 is made up of the finance ministers and central bank governors of 19 countries. www.g20.org

Trivia

41444351010

Dial this number if you have a need for Data Insight.

D1 Solutions

0.89

Schwarzschild radius of the earth. Compacted to 0.89 cm, the earth will become a black hole.

Interesting but useless info (IBUI)

1729

On top of being the famous Hardy-Ramanujan number, and being a sphenic number, 1729 is also the third Carmichael number, after 561 and 1105. A Carmichael number is an integer n where bn-1 = 1 (mod n) for all b that are prime relative to n. All prime numbers have the Carmichael property.

Scientific

1193, 1931, 3119, 9311

First 4 digits Circular Prime Numbers.

Scientific

111'111'111

First number, consisting only of digits 1, which, squared, does not produce a symmetrical result like 11x11 does.

Interesting but useless info (IBUI)

36y 130d 3h

Average age of D1 Solutions team members.

D1 Solutions

520

If you re-arrange things just a little bit, fate may change a lot: Swapping 2 and 5 (see 250) means a significant upgrade: In Mandarin Chinese the number 520 means, "I love you". To make an extra you may also say "520 1314": I love you forever... "13" meaning "this life", "14" meaning "until death" (or "until next life? according to religious preferences).

Trivia

8.1

Days per employee per year invested in training.

D1 Solutions

42

This number comes up in many discussions among certain professional circles (e.g., programmers). We are not sure why but we have our best analysts working to find out ;-)

Trivia

1729

Besides being the Hardy-Ramanujan number, 1729 is also a sphenic number because it is the product of three different primes (7*13*19).

Scientific

30

30% Probability that the leading digit in many lists of numbers starts with digit 1 (12.5% that it starts with 3). Called Benford's Law. Detected because some pages in logarithm tables looked used more than others. Used in forensic accounting, specifically in fraud detection.

Scientific

0

Number of uninteresting natural numbers: If there were uninteresting numbers, there would be a smallest uninteresting number - but the smallest uninteresting number is itself interesting by being so, producing a contradiction.

Trivia

9411

Distance in kilometers between both D1 Solutions offices, San Mateo and Zurich.

D1 Solutions

0.000154

Probability to get a royal flush in Texas hold 'em Poker.

Trivia

4444

Pragmatic as the Chinese are, if you take the the "4" (see 4) issue head-on you may turn it into a blessing: 4 times 4 i.e. 4444 means: may you be 4 times lucky in all four seasons.

Trivia

55

55% of human DNA is also found in bananas.

Trivia

4

Four half-moves are needed for the fastest possible checkmate (known as the Fool's mate).

Trivia

142857

This number rotates itself:

  142857 X 1 = 142857

  142857 X 2 = 285714

  142857 X 3 = 428571

  142857 X 4 = 571428

  142857 X 5 = 714285

  142857 X 6 = 857142

 

 

Scientific

7

Number of different countries of origin for D1 Solutions team members.

D1 Solutions

10

Number of clients representing 80% of D1 Solutions revenues.

D1 Solutions

16005

amount of revenue in $ Microsoft made in its first year (D1 Solutions: 114'000 CHF)

D1 Solutions

4

Four colors are needed to color a map so that no two adjacent regions get the same color (four-color theorem).

Scientific

4

Number 4 is considered an unlucky number in Chinese, Korean, and Japanese cultures because it is nearly homophonous to the word "death". In order not to take unnecessary risks, in most hotels in Hong Kong or Mainland China there is no fourth floor to choose in elevators (caring also about superstitious Westerners, the 13th floor is usually skipped as well).

Trivia

2005

Year when D1 was established.

D1 Solutions

9'721'368

The largest decimal number where you can eliminate any digit, and the number formed by the remaining digits are divisible by the eliminated digit.

Interesting but useless info (IBUI)

3

Number of eyes of the Tuatara lizard (lives in in New Zealand).

Interesting but useless info (IBUI)

626

Number of compositions by Mozart listed in the Köchel catalogue.

Trivia

313

Car number plate of Donald Duck.

Trivia

250

In Mandarin the number 250 (Er Bai Wu) means "moron". Nobody would accept a price or a salary at 250. Explanations about the origin of this expression differ, but a good interpretation seems "on a scale of 1000 you are 250".

Trivia

1729

The Hardy-Ramanujan number. The British mathematician G. H. Hardy told this story about the Indian mathematician Srinivasa Ramanujan: "I remember once going to see him when he was ill at Putney. I had ridden in taxi cab number 1729 and remarked that the number seemed to me rather a dull one, and that I hoped it was not an unfavorable omen. "No," he replied, "it is a very interesting number; it is the smallest number expressible as the sum of two cubes in two different ways." This anecdote gave this number its name.


    9^3 + 10^3 = 1729
    1^3 + 12^3 = 1729

Scientific

4

The great pyramids in Egypt have moved 4 kilometers with the earth's crust since they were built.

Trivia

4

Number of Poker Events per year organized by D1 Solutions.

D1 Solutions

«Success or failure of Business Intelligence depends essentially on data quality - this is the central focus in all our projects.»

Philipp Knüsel, Senior Consultant

Profit from our Knowledge

2011-02-21 | Candid Rutz

BO Universe Design Best Practices

According to the book of Genesis, the universe was created in seven days. The following day-by-day analogy provides a best practices guide for the creation of an SAP Business Objects Universe. Seven days actually might just be enough.

(PDF, 356kB)

2010-12-10 | Dr. Stamatis Stefanakos

Improved Customer Understanding with Survival Analysis

In this paper we discuss how survival analysis can be used to study the active lifetime of customers. We show how to calculate hazard probabilities and survival curves for segments of the customer base and how these can be used to extract valuable key performance indicators and to fine-tune the timing of campaigns.

(PDF, 208kB)

2010-11-26 | Adrian Wyss

SAP BusinessObjects: Standard Development Kits (SDK)

SAP BusinessObjects (BO) is a leading suite of data analysis and reporting tools designed to deliver insight to executives where and when they need it. Beyond a broad variety of desktop and web applications, BusinessObjects Enterprise provides a Standard Development Kit (SDK) for customized developments. This paper outlines the possibilities of the SDK and its tremendous value for the BO platform.

(PDF, 713kB)

2009-12-01 l Dr. Andreas Hauenstein

Neue Datenbanken für BI - Wie gut sind sie?

In letzter Zeit tauchen bemerkenswert viele neue Datenbanksysteme am Markt auf, was vor allem auf die Verfügbarkeit billiger 64-Bit Systeme mit grossem RAM zurückzuführen sein dürfte. Ein praxisorientierter Test zeigt, wie gut sie im Vergleich zu bekannten Systemen wie Oracle oder Mysql abschneiden.

(PDF, 938kB)

2009-09-01 l Dr. Andreas Hauenstein

Managing Dimension Hirarchies for Reporting

Every business has to aggregate numbers along hierarchies, like geography or department. Hyperion Essbase is very popular with financial controllers for facilitating this task. However, dimension design typically works on a per cube basis, which causes considerable maintenance overhead when the same dimension is used in multiple cubes or with other reporting tools.

We describe a method where dimension maintenance is done in one cube ? the metadata cube ? and then exported to a relational table. From there, the dimension flows into any number of reporting cubes that want to use it.

The dimension is automatically augmented to include all members occurring in the facts, even if they were forgotten during the dimension design process. We automatically create bridge tables to make the dimension acessible in relational queries and with any reporting tool.

(PDF, 1843kB)