3 research outputs found

    Prime factors of Ξ¦3(x)\Phi_3(x) of the same form

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    We parameterize solutions to the equality Ξ¦3(x)=Ξ¦3(a1)Ξ¦3(a2)β‹―Ξ¦3(an)\Phi_3(x)=\Phi_3(a_1)\Phi_3(a_2)\cdots\Phi_3(a_n) when each Ξ¦3(ai)\Phi_3(a_i) is prime. Our focus is on the special cases when n=2,3,4n=2,3,4, as this analysis simplifies and extends bounds on the total number of prime factors of an odd perfect number

    On a theorem of Kanold on odd perfect numbers

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    We shall prove that if N=pΞ±q12Ξ²1q22Ξ²2β‹―qrβˆ’12Ξ²rβˆ’1N=p^\alpha q_1^{2\beta_1} q_2^{2\beta_2} \cdots q_{r-1}^{2\beta_{r-1}} is an odd perfect number such that p,q1,…,qrβˆ’1p, q_1, \ldots, q_{r-1} are distinct primes, p≑α≑1mod  4p\equiv\alpha\equiv 1\mod{4} and tt divides 2Ξ²i+12\beta_i+1 for all i=1,2,…,rβˆ’1i=1, 2, \ldots, r-1, then t5t^5 divides NN, improving an eighty-year old result of Kanold.Comment: 8 pages, the author's final version of the paper of the same title in Indian J. Pure Appl. Math, which is available at https://doi.org/10.1007/s13226-023-00530-
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