On the intriguing number 1001

TY - JOUR

T1 - On the intriguing number 1001

AU - Krarup, Jakob

PY - 2016

Y1 - 2016

N2 - Born in 1936 I was a schoolboy on the threshold of the secondary school when a knapsack-type game was played with a class mate around 1946–1947. To play the game well and fascinated by numbers in general since my early childhood, however, I realized soon the usefulness of knowing that 1001 = 7 × 11 × 13. Today, about 70 years later, the game has been passed to some of my grandchildren who also should convince themselves that simple, arithmetic calculations do not necessarily require a pocket computer. As a side effect of the recent revival of the game I felt motivated to seek more insight into the intriguing number 1001. An account of the findings is provided.

AB - Born in 1936 I was a schoolboy on the threshold of the secondary school when a knapsack-type game was played with a class mate around 1946–1947. To play the game well and fascinated by numbers in general since my early childhood, however, I realized soon the usefulness of knowing that 1001 = 7 × 11 × 13. Today, about 70 years later, the game has been passed to some of my grandchildren who also should convince themselves that simple, arithmetic calculations do not necessarily require a pocket computer. As a side effect of the recent revival of the game I felt motivated to seek more insight into the intriguing number 1001. An account of the findings is provided.

KW - Integers

KW - Knapsack-type game

KW - Number freaks

UR - http://www.scopus.com/inward/record.url?scp=84936797563&partnerID=8YFLogxK

U2 - 10.1007/s10100-015-0404-9

DO - 10.1007/s10100-015-0404-9

M3 - Journal article

AN - SCOPUS:84936797563

SN - 1435-246X

VL - 24

SP - 787

EP - 795

JO - Central European Journal of Operations Research

JF - Central European Journal of Operations Research

IS - 3

ER -