Expressing Prime Num3ers by Using All Digits 1,2,3,4,5,6,7,8,9

Expressing Prime Num3ers using all digits from 1 to 9 only once

From 1 to 9:

(-1) + 2 – 3 – (4 * 5) + (6 * 7) + 8 + 9 = 37   is a prime number

1 – 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 41   is a prime number

(1*2*3*4) + 5 + 6 + 7 + 8 + 9 = 59   is a prime number

(1*2) + (3*4) + (5*6) + (7*8) + 9 = 109   is a prime number

 
From 9 to 1:

(9*8) + (7*6) + (5*4) + (3*2) – 1 = 139   is a prime number

 
Find more examples.

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About benvitalis

math grad - Interest: Number theory
This entry was posted in Math Beauty and tagged . Bookmark the permalink.

1 Response to Expressing Prime Num3ers by Using All Digits 1,2,3,4,5,6,7,8,9

  1. 1 + 2 – 3 – 4 + 5 + 6 + 7 + 8 + 9 = 31

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