334661domain: NPropertiesPrimalityPrimeyesAppears in sequencesDenominators of continued fraction convergents to sqrt(139).at n=13A041255Denominators of continued fraction convergents to sqrt(556).at n=13A042065Pell equation solutions (12*a(n))^2 - 145*b(n)^2 = -1 with b(n):=A097770(n), n >= 0.at n=2A097769Prime numbersat n=28769