Waring--Goldbach Problem: One square, four fifth powers and twenty-two seventh powers

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Contributed by Runbo Li ↗

Version 1 / Oct 21, 2026 / CC BY-SA 4.0

Abstract

We prove that for every sufficiently large odd integer nn, the equation $$ n = p_1^2 + p_2^5 + p_3^5 + p_4^5 + p_5^5 + p_6^7 + \cdots + p_{27}^7 $$ has a solution with all pjp_j prime.

References

  1. Andrade, G. M. L. On some Waring–Goldbach problems. Ramanujan J., vol. 69, no. 67. 2026
  2. Andrade, G. M. L. On sums of two squares, two cubes, and higher powers of primes. Bull. Braz. Math. Soc., New Series, vol. 57, no. 35. 2026
  3. Andrade, G. M. L. Waring–Goldbach problems for one square and higher powers. Indag. Math., in press, corrected proof. arXiv e-prints, pp. arXiv:2603.05550v1. 2026arXivDOI
  4. Andrade, G. M. L.; Godinho, H. Representing integers as sums of mixed powers of primes. Indag. Math., in press, corrected proof. arXiv e-prints, pp. arXiv:2512.05154v1. 2025arXivDOI
  5. Brüdern, J. Another Waring–Goldbach problem. Acta. Arith., vol. 210, pp. 125–132. 2023
  6. Hua, L.-K. Some results in the additive prime number theory. Quart. J. Math. Oxford Ser., vol. 9, no. 1, pp. 68–80. 1938
  7. Kumchev, A. V. On the Waring–Goldbach problem for seventh powers. Proc. Amer. Math. Soc., vol. 133, no. 10, pp. 2927–2937. 2005
  8. Kumchev, A. V. On Weyl sums over primes and almost primes. Michigan Math. J., vol. 54, no. 2, pp. 243–268. 2006
  9. Kumchev, A. V.; Wooley, T. D. On the Waring–Goldbach problem for seventh and higher powers. Monatsh. Math., vol. 183, no. 2, pp. 303–310. 2017
  10. Long, L.; Li, J.; Zhang, M. On Waring–Goldbach problem for two squares, three biquadratics, one quintic and one septic. arXiv e-prints, pp. arXiv:2610.15142v1. 2026arXivDOI
Show all 12 referencesShow fewer references
  1. Vaughan, R. C. The Hardy–Littlewood method, 2nd Edition. Cambridge University Press, Cambridge, vol. 125. 1997
  2. Wang, H.; Tian, S. On Waring–Goldbach problem with mixed powers. arXiv e-prints, pp. arXiv:2608.12397v1. 2026arXivDOI

Version history

  1. v1Submitted by Runbo LiInitial depositCurrentOct 20, 2026