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Mathematics of Computation

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Computing prime divisors in an interval

Authors: Minkyu Kim and Jung Hee Cheon
Journal: Math. Comp. 84 (2015), 339-354
MSC (2010): Primary 11Y05, 11Y16; Secondary 68Q25
Published electronically: May 28, 2014
MathSciNet review: 3266963
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Abstract: We address the problem of finding a nontrivial divisor of a composite integer when it has a prime divisor in an interval. We show that this problem can be solved in time of the square root of the interval length with a similar amount of storage, by presenting two algorithms; one is probabilistic and the other is its derandomized version.

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Additional Information

Minkyu Kim
Affiliation: Electronics and Telecommunications Research Institute, P. O. Box 1, Yuseong, Daejeon, 305-600, Korea

Jung Hee Cheon
Affiliation: ISaC and Department of Mathematical Sciences, Seoul National University, Seoul 151-747, Korea

Keywords: Integer factorization, prime divisors in an interval
Received by editor(s): December 15, 2012
Received by editor(s) in revised form: April 11, 2013, and May 10, 2013
Published electronically: May 28, 2014
Additional Notes: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (NRF-2011-0018345).
Article copyright: © Copyright 2014 American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication.