Erdős–Selfridge conjecture on prime divisors of consecutive products

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Let k≥4k\geq 4, let nn be an integer, and let p(k)p^{(k)} denote the smallest prime greater than or equal to kk. The product of kk consecutive integers is

(n+1)⋯(n+k).(n+1)\cdots(n+k).

Erdős–Selfridge conjecture. If n+k≥p(k)n+k\geq p^{(k)}, then there is a prime greater than kk which divides (n+1)⋯(n+k)(n+1)\cdots(n+k) to the first power.

This conjecture is attributed in the source to Erdős and Selfridge and is stated because it implies the index divisor free prime conjecture when k≥5k\geq 5 and kk is not prime. Its resolution status is not specified in the supplied text.

References

Primary source

Heidi Benham, Alexander Galarraga, Benjamin Hutz, Joey Lupo, Wayne Peng and Adam Towsley, “Integrality and Thurston Rigidity for Bicritical PCF Polynomials”, arXiv:2212.02558 (2022).

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