Gilbreath's conjecture

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What Wikipedia says

Gilbreath's conjecture is a conjecture in number theory regarding the sequences generated by applying the forward difference operator to consecutive prime numbers and leaving the results unsigned, and then repeating this process on consecutive terms in the resulting sequence, and so forth.

Excerpt from the Wikipedia article “Gilbreath's conjecture”, under the CC BY-SA 4.0 license. Read the article on Wikipedia