Pollard's p-1 method was used with b=25 to factorise an integer N, but for any choice of the base x it failed to give a factor. Which of the following numbers cannot be a factor of N? Select one or more: a. 2749 b. 4457 c. 5981 d. 1237 e. 1151

Database System Concepts
7th Edition
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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Pollard's p-1 method was used with b=25 to factorise an integer N, but for any choice of the base x it failed to give a factor. Which of the following numbers cannot be a factor of N?

Select one or more:

a.

2749

b.

4457

c.
5981
d.

1237

e.

1151

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