Surprise, surprise: this collection reveals Prime Numbers along four Parallel Diagonals.
“Prime Digits” 2 3 5 7 at the Top and Prime Numbers across the PyramidPrime Numbers grouped by Last Digits 1 and 3 7 9Last Digits of Prime NumbersLast Prime and Last Decimal DigitsFour “Diagonals of Primes”Diagonal Prime NumbersLast Digits of “Diagonals of Primes”“Prime Digits” 2 3 5 7 at the Top and Prime Numbers across the Pyramid
#PrimeNumbers in #AmazingColourPatterns 
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