@MISC{Pinch_thecarmichael, author = {Richard G. E. Pinch}, title = {The Carmichael numbers up to 10 20}, year = {} }
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Abstract
We extend our previous computations to show that there are 8220777 Carmichael numbers up to 10 20. As before, the numbers were generated by a back-tracking search for possible prime factorisations together with a “large prime variation”. We present further statistics on the distribution of Carmichael