Ulam spiral References Ulam spiral mathematics Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Stanislaw Ulam…the positive integers in a spiral pattern and crossed out the prime numbers. In the resulting Ulam spiral, horizontal, vertical, and diagonal lines containing large number of primes are prominent. Read More…the positive integers in a spiral pattern and crossed out the prime numbers. In the resulting Ulam spiral, horizontal, vertical, and diagonal lines containing large number of primes are prominent. Read More