Numbers 1,900,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

1,000,000 1,100,0001,200,000 – 1,300,0001,400,000

1,500,0001,600,0001,700,0001,800,0001,900,000

All Numbers  &  [100K] &  [1M]  - [2M]  - [3M] - [4M]  - [5M]  - [6M]  - [7M]  - [8M]  -  [9M]  &  [10M

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1,904,711

[Geology]  The proposed “World Traveling Salesman Problem” for 1,904,711 populated cities and towns on Earth is still unsolved. Its current best lower bound is 7,510,666,782 kilometers (or 4,666,911,973 miles).

 

1,919,190

[Math.]  The denominator of the 36th Bernoulli number:

B36 = 26315271553053477373/1919190.

 

1,923,075

[Math.]  076,923×25 = 1,923,075 and 1+923,075 = 923,076, a digit-rotation of 076,923.

 

1,953,125

[Math.]  1,953,125 = 5^(3^2) = 59 (involved first 3 prime numbers).

 

[Math.]  A power of 10 that can be represented as the product of 2 numbers, which have no digit 0: 1,000,000,000 = 29×59 = 512×1,953,125.

 

196,249

[Math.]  Square of numbers of similar pattern xxy, where y = x–1.

* 1102 = 012,100 & 012+100 = 112 = 110+2.

* 3322 = 110,224 & 110+224 = 334 = 332+2.

Similarly, 3…322 = 1…102…24 & 1…10+2…24 = 3…34 = 3…32+2.

* 4432 = 196,249 & 196+249 = 445 = 443+2

* 6652 = 442,225 & 442+225 = 667 = 665+2.

Similarly, 6…652 = 4…422…25 & 4…42+2…25 = 6…67 = 6…65+2.

* 7762 = 602,176 & 602+176 = 778 = 776+2.

 

1,999,899 & 1,999,900 & 1,999,901

[Math.]  All 3 numbers 1,999,899, 1,999,900 and 1,999,901 have all their 404th, 414th, 424th, 434th, 444th and 454th powers starting with digits 404, 414, 424, 434, 444 and 454, respectively.

 

1,999,998

[Math.]  888,8883 = 702,329,854,597,443,072 and

702329+854597+443072 = 2×999,999.

999,9993 = 999,997,000,002,999,999 and 

999997+000002+999999 = 2×999,999 = 1,999,998.