Numbers 30,000,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

30,000,000,000 31,000,000,00032,000,000,000 – 33,000,000,00034,000,000,000

35,000,000,00036,000,000,00037,000,000,00038,000,000,00039,000,000,000

 All Numbers  – [1B] –  [10B] –  [20B] – [30B] – [40B] – [50B] – [60B] – [70B] – [80B] – [90B] & [100B]

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

30,000,000,00

[Tech.]  Frequency Ranges. 

Range

Names

Uses

3 Hz -

300 Hz

Extremely Low Frequency (ELF)

Telegraph

300 Hz -

3 KHz

Voice Frequency (VF)

Telephone Circuitry

3 KHz -

30 KHz

Very Low Frequency (VLF)

High Fidelity

30 KHz- 300 KHz

Low Frequency (LF)

Maritime Mobile

300 KHz -

3 MHz

Medium Frequency (MF)

Navigational Radio, Land-maritime Mobile

3 MHz -

30 MHz

High Frequency (HF)

Maritime, Aeronautical, Amateur Radio

30 MHz -

300 MHz

Very High Frequency (VHF)

Maritime, Meteorological Communication, Television

300 MHz -

3 GHz

Ultra High Frequency (UHF)

Television, Military, Low Range Radar

3 GHz -

30 GHz

Super High Frequency (SHF)

Space, Satellite, Microwave

30 GHz -

300 GHz

Extremely High Frequency (EHF)

Radio Astronomy

 

30,143,853,495

[Math.]  Two consecutive sums of consecutive square numbers:

30,143,853,495 = 177662+…+178602 = 178612+…+179542.

 

30,190,800,025

[Math.]  Sum of the first 589 cube numbers:

13+…+5893 = 30,190,800,025 = (1+…+589)2 = 173,7552.

 

30,396,179,025

[Math.]  Sum of the first 590 cube numbers:

13+…+5903 = 30,396,179,025 = (1+…+590)2 = 174,3452.

 

30,602,604,096

[Math.]  Sum of the first 591 cube numbers:

13+…+5913 = 30,602,604,096 = (1+…+591)2 = 174,9362.

 

30,810,078,784

[Math.]  Sum of the first 592 cube numbers:

13+…+5923 = 30,810,078,784 = (1+…+592)2 = 175,5282  

 

xy,zwv,abc,def

[Math.]  For any xy,zwv = 10,000 to 99,999, there are always six 6-digit numbers abc,edf such that xy,zwv +abc,def is equal to one of 6 digit-rotations of 142,857 and the number xy,zwv,abc,def is a multiple of 142,857.

 

For any xy,zwv  = 10,000 to 76,922, there are always twelve 6-digit numbers abc,edf such that xy,zwv +abc,def is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,zwv,abc,def is a multiple of 76,923.