Numbers 15,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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15,000

[EECS]  15K(W) is one of standard numerical values for resistors (of tolerance class 5%).

[Trivia]  Chili Heat Scale

 Scoville Units Chili Varieties 100,000 – 300,000 Habanero 50,000 – 100,000 Chiltepin, Thai 30,000 – 50,000 Pequin 15,000 – 30,000 De Arbol, Japones 5,000 – 15,000 Serrano, Pasilla de Oaxaco 2,500 – 5,000 Jalapeno, Guajillo, Chilpotle, Dried Green 1,500 – 2,500 NM Pods-Hot, Cascabel, Chihuacle Negro 1000 – 1,500 Ancho, Pasilla, Negro 500 – 1,000 Analeim, NM Pods-Mild, Mulato 100 – 500 Cherry 0 – 100 Bells, Pimento, Cubanelle

15,015

[Math.]  Product of the first 5 odd prime numbers: 15,015 = 3×5×7×11×13.

15,017

[Math.]  A prime number.

15017 = 1!2+2!2+3!2+4!2+5!2. The largest such sum to be a prime number.

15,018

[Math.]  15018 = 0!2+1!2+2!2+3!2+4!2+5!2.

15,084

[Math.]  Two multiples of number 3771, 3771×7 = 15,084 and 3771×7 = 26,397, use each of 10 digits 0-9 once.

15,112

[Geology & Math.]  The “Traveling Salesman Problem” for 15,112 populated cities and towns in Germany solved in April 2001.

15,127

[Math.]  The 20th Lucas number.

15,129

[Math.]  15,129 = (–1–5+129)2 = 1232.

15,333

[Math.]  15333 = 14+24+34+44+54+64+74+84+94.

15,353

[Math.]  153532 = 235,714,609, a square using all 9 digits 0-9 once, except digit 8.

15,360

[Measure]  The number of minims in a quart.

U.S. customary units for liquid measures: 1 gallon = 4 quarts = 8 pints = 32 gills = 128 fluid ounces = 1024 fluid drams = 61440 minims = 3.785411784 liters = 231 inch3.

15,384

[Math.]  Each ratio 15384/7692 = 2, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #2.

15,472

[Math.]  The first known sociable number chain (by Poulet, 1918): 12496 → 14288 → 15472 → 14536 → 14264 → 12496.

15,625

[Math.]  A power of 10 that can be represented as the product of 2 numbers, which have no digit 0: 106 = 1,000,000 = 26×56 = 64×15,625.

15,628

[Math.]  The equality 3907×4 = 15,628 uses each of 10 digits 0-9 once.

15,642

[Math.]  Two multiples of number 7884, 7821×2 = 15,642 and 7821×9 = 70,389, use each of 10 digits 0-9 once.

15,681

[Math.]  156812 = 245,893,761, one of thirty 9-digit square numbers using each of 9 digits 1-9 once.

15,707

[Math.]  15707 = 12+34+56.

15,710

[Math.]  15710 = 22+34+56.

15,739

[Math.]  A prime number of all 5 different odd digits.

15,768

[Math.]  Each ratio 15768/3942 = 17568/4392 = 23184/5796 = 31824/7956 = 4, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #4.

[Math.]  Two multiples of number 7884, 7884×2 = 15,768 and 7884×5 = 39,420, use each of 10 digits 0-9 once.

15,806

[Geology]  The highest railway point in the world, at Ticlio Pass, Peru: 4818 meters (15806 feet).

15,840

[Math.]  Sum (in degrees) of all internal angles of a 90-side polygon.

15,841

[Math.]  A Carmichael number: 15,841 = 7×31×73.

15,846

[Math.]  Each ratio 15846/7923 = 2, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #2.

15,864

[Math.]  Each ratio 15864/7932 = 2, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #2.

15,930

[Math.]  Two multiples of number 3186, 3186×5 = 15,930 and 3186×9 = 28,674, use each of 10 digits 0-9 once.

15,937

[Math.]  A prime number of all 5 different odd digits.

15,963

[Math.]  159632 = 254,817,369, one of thirty 9-digit square numbers using each of 9 digits 1-9 once.

15,973

[Math.]  A prime number of all 5 different odd digits

15,984

[Math.]

7,683,984 = 1584×4851 = 27722

782432784 = 15984×48951 = 279722

78384320784 = 159984×489951 = 2799722

7839843200784 = 1599984×4899951 = 27999722

783998432000784 = 15999984×48999951 = 279999722

7839…9984320000784 = 159…999984×489…999951 = 279…9999722

...

15nnn

[Zip]  U.S. Postal Zip Codes of Pennsylvania: 15nnn-18nnn and 190nn-196nn.