Numbers 300,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

300,000,000 310,000,000320,000,000330,000,000 – 340,000,000

  All Numbers  350,000,000360,000,000370,000,000380,000,000390,000,000

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

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

300,000,000

[Math.] 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

 

300,814,336

[Math.]  300,814,336 = (3008+14336)2 = 173442.

 

302,446,881

[Math.]  Sum of the first 186 cube numbers:

13+23+…+1863 = 302,446,881 = (1+2+…+186)2 = 17,3912.

 

305,419,896

[Math.]  305,419,896 (decimal) = 0x12345678 (hexadecimal).

 

307,265,841

[Math.]  175292 = 307,265,841, one of 22 squares using all 9 digits 0-8 once.

 

308,641,975

[Math.]  Multiples of 012345679 by 7, 16, 25, 34, 43, 52, 61, 70 and 79 will yield all 9 rotations of 086419753: 086419753, 197530864, 308641975, 419753086, 530864197, 641975308, 753086419, 864197530 and 975308641. All numbers are missing digit 2.

 

308,986,084

[Math.]  Sum of the first 187 cube numbers:

13+23+…+1873 = 308,986,084 = (1+2+…+187)2 = 17,5782.

 

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.