Papers › Some explicit results on the sum of a prime and an almost prime

Some explicit results on the sum of a prime and an almost prime

2 Aug 2022arXiv:2208.01229links table onlyarchive 2025-07-28

Daniel R. Johnston, Valeriia V. Starichkova

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Inspired by a classical result of R\'enyi, we prove that every even integer N≥4 can be written as the sum of a prime and a number with at most 395 prime factors. We also show, under assumption of the generalised Riemann hypothesis, that this result can be improved to 31 prime factors.

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