Numbers 20,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

20,000,000 21,000,00022,000,00023,000,000 – 24,000,000

25,000,00026,000,00027,000,00028,000,00029,000,000

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

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

20,000,002

[Math.]  (Sequence of numbers 20…02).

200000023 = 8000002400000240000008 = (–8+0000024000002–4000000+8)3.

 

20,014,808

 [Math.]  A pair of amicable numbers (20014808, 21457192).

 

20,022,328

[Math.]  A pair of amicable numbers (20022328, 22823432).

 

20,151,121

[Math.]  20,151,121 = (20+15+11+21)4 = 674.

 

20,308,995

[Math.]  A pair of amicable numbers (20308995, 20955645).

 

20,615,673

[Math.]  A special 4th power (found by Noam Elkies, 1988): 20,615,6734 = 18,796,7604+15,365,6394+2,682,4404. A counter-example to disprove Euler’s conjecture that it always requires at least n terms (of nth power) to sum to an nth power, nontrivially. (Fermat’s Last Theorem is a special case for only 2 terms).

 

20,620,681

[Math.]  45412 = 20,620,681.

 

20,633,239

[Math.]  The 35th Lucas number.

 

20,720,704

[Math.]  45522 = 20,720,704.

 

20,793,600

[Math.]  Sum of the first 95 cube numbers:

13+23+…+943+953 = 19,936,225 = (1+2+…+94+95)2 = 45602.

 

20,882,087

[Math.]  A prime number. So is 20,802,079.

 

20,955,645

[Math.]  A pair of amicable numbers (20308995, 20955645).

 

20,996,011 

[Math.]  A prime number. A Mersenne exponent: 220996011–1 is the 40th Mersenne prime number. 


xy,abc,def

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

 

For any xy = 10 to 99, there are always twelve 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,abc,def is a multiple of 76,923.