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Today is Day 143 of 2017

143

is the smallest quasi-Carmichael number in base 8.

= 11 x 13 (product of twin primes)
= 1001 / 7
= 22 + 32 + 32 + 112
= - 34 - 44 - 54 - 64 + 74
= 43 + 47 + 53 = 11 + 13 + 17 + 19 + 23 + 29 + 31 (sum of consecutive primes)

Many thanks are extended to Archimedes' Lab for their information.




143

Today is day number   of 2017. Below are various representations of the number 143, some dating thousands of years, and some very modern.

Chinese

Egyptian

Mayan

 

Babylonian

Greek

Abacus

Roman

 

Hex

 

Binary

 

Many thanks are extended to Jo Edkins for her wonderful work.

 



 

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