Abstract
We extend the method due originally to Löh and Niebuhr for the generation of Carmichael numbers with a large number of prime factors to other classes of pseudoprimes, such as Williams's pseudoprimes and elliptic pseudoprimes. We exhibit also some new Dickson pseudoprimes as well as superstrong Dickson pseudoprimes.
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Alford, W. R., Granville, A., Pomerance, C.: There are infinitely many Carmichael numbers. Ann. Math.139(3), 703–722 (May 1994)
Bedocchi, E.: Note on a conjecture on prime numbers. Rev. Math. Univ. Parma4(11), 229–236 (1985)
Brillhart, J., Lehmer, D. H., Selfridge, J. L.: New primality criteria and factorizations of 2m+-1. Math. Comp.29(130), 620–647 (1975)
Carmichael, R. D.: Note on a new number theory function. Bull AMSXVI, 232–238 (1910)
Carmichael, R. D.: On composite numbersP which satisfy the fermat congruence ap−1≡1 mod P. Am. Math. MonthlyXIX, 22–27 (1912)
Chernick, J.: On Fermat's simple theorem. Bull. AMS45, 269–274 (Apr. 1939)
Cohen, G. L., Hagis, Jr, P.: On the number of prime factors ofn if ø(n)¦(n−1). Nieuw Archief voor Wiskunde (3)XXVIII, 177–185 (1980)
Dickson, L. E.: The analytic representation of substitutions on a power of a prime number of letters with a discussion of the linear group I. Ann. Math.11, 65–120 (1896)
Dubner, H.: A new method for producing large Carmichael numbers. Math. Comp.53(187), 411–414 (July 1989)
Erdös, P., Pomerance, C., Schmutz, E.: Carmichael's lambda function. Acta Arithmetica LVIII, 4, 363–385 (1991)
Giuga, G.: Su una presumbile proprietà caratteristica dei numeri primi. Ist. Lombardo Sci. Lett. Rend. Cl. Sci. Nat. 3,14(83), 511–528 (1950)
Gordon, D. M.: On the number of elliptic pseudoprimes. Math. Comp.52(185), 231–245 (Jan. 1989)
Gordon, D. M., Pomerance, C.: The distribution of Lucas and elliptic pseudoprimes. Math. Comp.57(196), 825–838 (Oct. 1991)
Guillaume, D., Morain, F.: Building Carmichael numbers with a large number of prime factors. Research Report LIX/RR/92/01, Ecole Polytechnique-LIX, Feb. 1992
Guillaume, D., Morain, F.: Building Carmichael numbers with a large number of prime factors and generalization to other numbers. Research Report 1741, INRIA, Aug. 1992
Jaeschke, G.: The Carmichael numbers to 1012. Math. Comp.55(191), 383–389 (July 1990)
Keller, W.: The Carmichael numbers to 1013. AMS Abstracts9, 328–329 (1988), Abstract 88T-11-150
Kishore, M.: On the number of district prime factors of n for which ø(n)¦n−1. Nieuw Archief voor Wiskunde (3)XXV, 48–53 (1977)
Kowol, G.: On strong Dickson pseudoprimes. AAECC3, 129–138 (1992)
Lausch, H., Nöbauer, W.: Algebra of polynomials. North Holland, Amsterdam 1973
Lehmer, D. H.: An extended theory of Lucas' functions. Ann. Math.31, 419–448 (1930). Series (2)
Lehmer, D. H.: On Euler's totient function. Bull. AMS38, 745–751 (1932)
Lidl, R., Mullen, G. L., Turnwald, G.: Dickson polynomials, vol. 65 of Pitman Monographs and Surveys in Pure and Applied Mathematics. Longman Scientific & Technical, 1993
Lidl, R., Müller, W. B.: Primality testing with Lucas functions. In: Auscrypt '92 (1992), vol. 718 of Lect. Notes in Computer Science, Berlin, Heidelberg, New York: Springer, pp. 539–542
Lidl, R., Müller, W. B., Oswald, A.: Some remarks on strong Fibonatci pseudoprimes. AAECC1, 59–65 (1990)
Lieuwens, E.: Do there exist composite numbersM for which kø(M)=M −1 holds? Nieuw Archief voor Wiskunde (3)XVIII, 165–169 (1970)
Löh, G.: Carmichael numbers with a large number of prime factors. AMS Abstracts9, 329. Abstract 88T-11-151 (1988)
Löh, G., Niebuhr, W.: Carmichael numbers with a large number of prime factors, II. AMS Abstracts10, 305 (1989), Abstract 89T-11-131
Nicolas, J.-L.: On highly composite numbers. In: Ramanujan revisited (1988). Andrews, G., Askey, R., Berndt, B., Ramanathan, K., Rankin, R. (eds.) New York, London: Academic Press, pp. 215–244
Pinch, R.: The Carmichael numbers to 1015. Math. Comp.61(203), 381–392 (July 1993)
Pinch, R.: The pseudoprimes up to 1013. Preprint, 1995
Pomerance, C., Selfridge, J. L., Wagstaff, Jr, S. S.: The pseudoprimes to 25.109. Math. Comp.35(151), 1003–1026 (1980)
Porto, A. D., Filipponi, P.: A probabilistic primality test based on the properties of certain generalized Lucas numbers. In: Advances in Cryptology — EUROCRYPT '88 (1988), Günther, C. G. (ed.), vol. 330 of Lect. Notes in Computer Science. Berlin, Heidelberg, New York, Springer, pp. 211–223
Ramanujan, S.: Highly composite numbers. Proc. London Math. Soc.2(14), 347–409 (1915)
Ribenboim, P.: The book of prime number records, 2nd ed. Berlin, Heidelberg, New York, Springer 1989
Riessei, H.: Prime numbers and computer methods for factorization, 2nd ed., vol. 57 of Progress in Mathematics. Basel: Birkhäuser 1985
Wagstaff, S. S. Jr: Large Carmichael numbers. Math. J. Okayama Univ.22, 33–41 (1980)
Williams, H. C.: On number analogous to the Carmichael numbers. Canadian Math. Bull.20(1), 133–143 (1977)
Woods, D., Huenemann, J.: Larger Carmichael numbers. Comp. Math. Appls.8(3), 215–216 (1982)
Yorinaga, M.: Numerical computation of Carmichael numbers. Math. Okayama University20(2), 151–163 (1978)
Yorinaga, M.: Carmichael numbers with many prime factors. J. Okayama Univ.22, 169–184 (1980)
Zhang, M.: Searching for large Carmichael numbers. Sichuan Daxue Xuebao, Dec. 1991. (to appear)
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On leave from the French Department of Defense, Délégation Générale pour l'Armement
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Guillaume, D., Morain, F. Building pseudoprimes with a large number of prime factors. AAECC 7, 263–277 (1996). https://doi.org/10.1007/BF01195532
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DOI: https://doi.org/10.1007/BF01195532