Thursday 8 August 2019

Blog Post #105: Know more about 370 and 371

I am referring to whole numbers 370 and 371 and nothing else :) I case you like numbers continue to read on else if you were looking for something else on 370 and 371 you can go back to FB and Twitter feeds!!!

Here are some interesting facts about 370 and 371

a) Both are called Armstrong numbers

b) 3 ^ 3 + 7 ^ 3 + 0 ^ 3 = 370 and 3 ^ 3 + 7 ^ 3 + 1 ^ 3 = 371 (hence Armstrong numbers)

c) Adding a prime number (37) to 370 or another perfect square (36) to 371 gives 407 which is the last 3 digit Armstrong number!

d) 371 is a product of two prime number 53, 7. Prefix 1 before 53 and you get 153 which is the first Armstrong number!

e) 370 is also sum of two squares - 361 and 9 (19 and 3 which are prime numbers again)

f) 370 + 371 = 741 which is a product of three prime numbers 19, 3 and 13 (Yes 19 and 3 again!)

g) 370 in Reverse is 73 and 371 in Reverse is 173 and both are Prime numbers again!

h) 370 + 407 is 777 which a product of three prime numbers again - 37, 3, 7

We can go on and on and find more patterns about this Armstrong number pair..Amazing!