80923domain: NPropertiesPrimalityPrimeyesAppears in sequencesThird term of balanced prime quartets: p(m-1)-p(m-2) = p(m)-p(m-1) = p(m+1)-p(m).at n=29A054802Number of compositions (ordered partitions) of n into heptagonal numbers (A000566).at n=52A322799Prime numbersat n=7920