1102249domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 7*k^3+1.at n=6A201182Septic hyperartiads: septic artiads (A270800) for which 7 is a 7th power residue.at n=7A270801Smallest prime of the form (2*n)*3^m + 1 for some m >= 0, or -1 if no such prime exists.at n=27A291438Prime numbersat n=85877