Numbers 800,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

[1M] & [10M] & [100M- [200M] - [300M] - [400M] - [500M] - [600M] - [700M] - [800M] - [900M] & [1B]

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800,000,003

[Math.] (Sequence of numbers 80…032 = 640…0480…09).

800,000,0032  = 640000004800000009 = (–6+4–0000004+800000009)2.

800,000,005

[Math.] (Sequence of numbers 80…052 = 640…080…025).

800,000,0052 = 640000008000000025 = (–6+4+000000+800000002+5)2.

801,765,089

[Math.] 801,765,089 = 9293 = 8933+4473+693.

802,469,135

[Math.]  Multiples of 012345679 by 2, 11, 20, 29, 38, 47, 56, 65 and 74 will yield all 9 rotations of 024691358: 024691358, 135802469, 246913580, 358024691, 469135802, 580246913, 691358024, 802469135 and 913580246. All numbers are missing digit 7.

803,495,716

[Math.] 283462 = 803,495,716, a square using all 9 digits 0-9 once, except digit 2.

808,890,481

[Math.] Sum of the first 238 cube numbers:

13+23+…+2383 = 808,890,481 = (1+2+…+238)2 = 28,4412.

xyz,abc,def

[Math.]  For any xyz = 100 to 999, there are always six 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number  xyz,abc,def is a multiple of 142,857.

For any xyz = 100 to 999, there are always twelve 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xyz,abc,def is a multiple of 76,923.