Numbers 41,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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41,000

[Tech.]  The vertical separation minimum for planes flying at altitudes 29,000 to 41,000 feet is 1000 feet. (It was 2000 feet in U.S. before 2005).

Horizontal separation will remain at 5¾ miles = 30,360 feet.

41,041

[Math.]  The first Carmichael number consisting of 4 prime factors: 41041 = 7×11×13×41. Number 410,041 is also a Carmichael number.

41,055

[Math.]  Two consecutive sums of consecutive numbers:

1156+1157+…+1190 = 1191+1192+…+1224 = 41,055.

41,095

[Math.]  Two multiples of number 8219, 8219×4 = 32,876 and 8219×5 = 41,095, use each of 10 digits 0-9 once.

41,096

[Math.]  41,096×83 = 3,410,968.

41,209

[Math.]  Three square numbers using the same digits: 1482 = 21904, 2032 = 41209 and 3022 = 91204.

41,538

[Math.]  Two multiples of number 5934, 5934×5 = 29,670 and 5934×7 = 41,538, use each of 10 digits 0-9 once.

41,616

[Math.]  The 4th square number that is also a triangular number: 2042 = 1+2+…+288 = 41616. Each root number in the series is 6 times the previous root number minus the earlier root number: 1, 62, 352, 2042, 11892

[Math.]  Three square numbers using the same digits: 1082 = 11664, 1292 = 16641 and 2042 = 41616

[Math.]  2042 = 233+243+253 = 41,616.

41,760

[Calendar]  The number of minutes in February of a leap year.

[Math.]  Sum (in degrees) of all internal angles of a 234-side polygon.

41,766

[Zip]  U.S. Postal Zip Code: Thousandsticks, Kentucky 41766.

41,769

[Math.]  Two multiples of number 5967, 5967×6 = 35,802 and 5967×7 = 41,769, use each of 10 digits 0-9 once.

41,796

[Math.]  Two multiples of number 4644, 4644×7 = 32,508 and 4644×9 = 41,796, use each of 10 digits 0-9 once.

41,832

[Math.]  Each ratio 41832/5976 = 7, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #7.

41,895

[Math.]  Two multiples of number 8379, 8379×5 = 41,895 and 8379×8 = 67,032, use each of 10 digits 0-9 once.

41,896

[Math.]  The ratio 41896/5237 = 8, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #8.

41nnn

[Zip]  U.S. Postal Zip Codes of Kentucky: 40nnn-42nnn.