Odd perfect numbers not divisible by $3$. II
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 by Masao Kishore PDF
 Math. Comp. 40 (1983), 405411 Request permission
Abstract:
We prove that odd perfect numbers not divisible by 3 have at least eleven distinct prime factors.References

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Additional Information
 © Copyright 1983 American Mathematical Society
 Journal: Math. Comp. 40 (1983), 405411
 MSC: Primary 10A20
 DOI: https://doi.org/10.1090/S00255718198306794563
 MathSciNet review: 679456