29816641domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest number in an integer 6-tuple (a, b, c, d, e, f) satisfying the Markoff(6) equation a^2+b^2+c^2+d^2+e^2+f^2 = 6*a*b*c*d*e*f.at n=20A227206Prime numbersat n=1847074