Journal of Number Theory
We show that for any positive integer n, there is some fixed A such that d(x) = d(x +n) = A infinitely often where d(x) denotes the number of divisors of x. In fact, we establish the stronger result that both x and x +n have the same fixed exponent pattern for infinitely many x. Here the exponent pattern of an integer x > 1is the multiset of nonzero exponents which appear in the prime factorization of x.
Daniel A. Goldston, Sidney W. Graham, Apoorva Panidapu, Janos Pintz, Jordan Schettler, and Cem Y. Yıldırım. "Small gaps between almost primes, the parity problem, and some conjectures of Erdős on consecutive integers II" Journal of Number Theory (2020): 222-231. https://doi.org/10.1016/j.jnt.2020.06.002
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