These integers greater than one have exactly two positive divisors: one and themselves.

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Your new ahaPrime Numbers

A prime number is a positive integer greater than one with exactly two positive divisors. Source: Prime number ↗

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05Starting with 0 and 1, each term of this sequence is the sum of the previous two.RECALL
The Fibonacci Sequence
The Fibonacci sequence, where each term sums the two before it, shows up in patterns like sunflower spirals.
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06These positive integers equal the sum of their positive divisors excluding themselves; 6 and 28 are examples.RECALL
Perfect Numbers
Perfect numbers equal the sum of their positive divisors excluding themselves: 6 = 1 + 2 + 3.
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07Each interior entry in this triangular array is the sum of the two entries directly above it.RECALL
Pascal's Triangle
Pascal's triangle builds each entry from the sum of the two numbers above it in the row before.
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