Post counting thread.

In the USA, 811 is the national "call before you dig" number (to avoid wrecking pipes or other utility lines in the ground), and I gather that in some Canadian provinces the same number is used for non-emergency telehealth services, with some variation among the provinces.

812. A nice Ferrari

813 = 3x3x3x3x10 plus 3.

814. The year Charlemagne, “passed away”.😢

815 A.D. -- Iconoclasm makes a comeback, thanks to the Synod of Constantinople.

Also, legend has it that Emperor Saga became the first Japanese sovereign to drink tea.

816 is a helicopter squadron based at HMAS Albatross in Nowra, Australia. It provides the Australian Navy fleet with anti-submarine and anti-surface surveillance capabilities.

816 Squadron was first formed as a Royal Navy Fleet Air Arm carrier based squadron in 1939 embarked in HMS Furious.

19*43

818, an “OK” Vodka.

819 is the sum of the first 13 square numbers.

In other words you would need 819 cannonballs
to make a square based pyramidal stack 13 balls high.

820 is the sum of the first 40 integers

@Paul-Martin said
819 is the sum of the first 13 square numbers.

In other words you would need 819 cannonballs
to make a square based pyramidal stack 13 balls high.

822 Lalage is a background asteroid from the inner regions of the asteroid belt. It was discovered on 31 March 1916, by astronomer Max Wolf.

8=2^3

8 = 2 x 4

@orangutan said
I'm worried that you know this.
I also hope I'm out of range of your cannon ...

821 is approximately the range (in feet) of a medieval cannon.