119837257domain: NPropertiesPrimalityPrimeyesAppears in sequencesTerms in the decimal expansion of 1/(7*5^n) before the block of decimals 142857 (the period of 1/7) appears.at n=22A067703a(n) is the largest prime factor of n*2^n-1.at n=24A367003Prime numbersat n=6832822