Numbers 1500-1599

A page of the Numeropedia - the Special Encyclopedia of Numbers

All Numbers  &  [1K…) * [2K…) * [3K…) * [4K…) * [5K…) * [6K…) * [7K…) * [8K…) * [9K…)  & [10K] & [100K]

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q - ...

1,500 (separate page)

1,501

[Calendar]  The first year of the 16th century.

1,507

[Library]  The word "America" was first used on a map published in the year 1507.

1,511

[Math.]  A prime number.

1,512

[Math.]

12×21 = 252 = 21×12

12×42 = 504 = 21×24          24×21 =    504 = 42×12

12×63 = 756 = 21×36          24×63 = 1,512 = 42×36

12×84 = 1,008 = 21×48       24×42 = 1,008 = 42×24

36×84 = 3,024 = 63×48       24×84 = 2,016 = 42×48.

1,514

[Math.]  Square and cube of number 1514, 15142 = 2,292,196 and 15143 = 3,470,384,744 uses different digits.

1,517

[Theology]  The year Martin Luther initiated the Reformation.

1,518

[Math.]  Two consecutive sums of consecutive numbers:

121+122+…+132 = 133+112+…+143 = 1518.

[Math.]  1,518,037,444 = (1518+037444)2 = 38,9622 and 923,594,037,444 = (923594+037444)2 = 961,0382 and 38962+961038 = 1,000,000.

1,522

[Geology]  The year Magellan’s expedition circumnavigated the globe.

1,523

[Math.]  A prime number.

1,536

[Math.]  The infinite sum 1–(1/35)+(1/55)–(1/75)+… = 5p3/1536, where n runs over all positive integers.

1,537

[Math.]  The 10th Keith number: 1, 5, 3, 7, 16, 31, 57, 111, 215, 414, 797, 1537, 2963…

1,540

[Math.]  A triangular number (sum of all integers from 1 to 55): 1540 = 1+2+…+54+55.

1,543

[Astronomy]  The year Copernicus postulated a heliocentric universe.

[Math.]  A prime number.  1543 = 1111+55+44+333.

1,549

[Math.]  A prime number.

1,550

[Measure]  The number of square inches in a square meter.

U.S. customary units for area measures: 1 m2 (square meter) = 10.76391 ft2 (square feet) = 1550.0031 inch2 (square inches).

1,551

[Math.]

 33×34 = 1122 33×35 = 1155 33×36 = 1188 33×37 = 1221 33×47 = 1551 33×57 = 1881

 333×334 = 111,222 333×335 = 111,555 333×336 = 111,888 333×337 = 112,221 333×347 = 115,551 333×357 = 118,881

… (generalizable pattern) …

1,557

[Math.]  15572 = 2,424,249.

1,559

[Math.]  A prime number.

1,560

[Library]  ISBN-1-560 is the International Standard Book Number for books published by Thunder’s Mouth Press.

1,561

[Math.]  15613 = 3,803,721,481 = (+3+803+72+1481)3.

1,567

[Math.]  A prime number.

1,571

[Math.]  A prime number.

1,576

[Trivia]  The New York’s Empire State Building has 1576 steps to its 86th-floor observatory, usually used for its annual “Run-Up” contest.

1,579

[Math.]  A prime number.

1,582

[Calendar]  The year that 10 days were added (5 October became 15 October) to adopt to the Gregorian calendar (created by Pope Gregory XIII to reform the old Julian calendar) in France, Portugal, Italy and Spain…

1,583

[Math.]  A prime number

1,584

[Math.]  1584 = 73+83+93.

[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

...

1,590

[Math.]  The denominator of the 52nd Bernoulli number.

1,593

[Tech.]  The year Galileo (Italian) invented water thermometer (with open column).

1,596

[Math.]  A triangular number (sum of all integers from 1 to 56): 1596 = 1+2+…+55+56.

[Math.]  11,093,796 = 3972×2793 = 6951×1596.

1,597

[Math.]  A prime number.  The 17th Fibonacci number.

[Math.]  The first Markov numbers are 1, 2, 5, 13, 29, 34, 89, 169, 194, 233, 433, 610, 985, 1325, 1597, 2897, 4181, 5741, 6466, 7561, 9077…