On Thursday, April 11, 2019 10:44:25 PM EDT Hans L wrote: > Is base 210 significantly stronger than a base 2 test? 210 = 2 * 3 * 5 * 7, so could doing a base 210 test equivalent to doing one with 2, 3, 5, and 7 individually? I'm not very informed on primality testing, but maybe this can shed some light if true.