3 × 7 × 997

Prime Factor Structure

Factorization String 3 × 7 × 997

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 31,936

Proper Divisor Sum 10,999

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #20929 ← → #20939

1 3 7 21 997 2,991 6,979 20,937

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

20,937 62,812 31,406 15,703 47,110 23,555 70,666 35,333 106,000 53,000 26,500 13,250 6,625 19,876 9,938 4,969 14,908 7,454 3,727 11,182 5,591 16,774 8,387 25,162 12,581 37,744 18,872 9,436 4,718 2,359 7,078 3,539 10,618 5,309 15,928 7,964 3,982 1,991 5,974 2,987 8,962 4,481 13,444 6,722 3,361 10,084 5,042 2,521 7,564 3,782 1,891 5,674 2,837 8,512 4,256 2,128 1,064 532 266 133

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.