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a Prime number is a whole number that has exactly two factors_ itself and 1. a pyramid composed of prime numbers is called a prime pyramid. each row of the prime pyramid begins with 1 and ends with the number of the row. in each row, the numbers from 1 to the row number are arranged such that the sum of any 2 adjacent numbers is a prime.

for example look at row 4
it must contain the numbers 1,2,3 and 4
it must begin with 1 and end with 4
the sum of the adjacent pairs must be a prime number
1+2=3, 2+3=5, 3+4=7





1

1 2

1 2 3

1 2 3 4

1 4 3 2 5

1 4 3 2 5 6

1 4 3 2 5 6 7

1 4 7 6 5 2 3 8

1 2 3 4 7 6 5 8 9

................ so on

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i don"t need to go this far

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15y ago

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