31 × 643

Prime Factor Structure

Factorization String 31 × 643

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 20,608

Proper Divisor Sum 675

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #19927 ← → #19937

1 31 643 19,933

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

19,933 59,800 29,900 14,950 7,475 22,426 11,213 33,640 16,820 8,410 4,205 12,616 6,308 3,154 1,577 4,732 2,366 1,183 3,550 1,775 5,326 2,663 7,990 3,995 11,986 5,993 17,980 8,990 4,495 13,486 6,743 20,230 10,115 30,346 15,173 45,520 22,760 11,380 5,690 2,845 8,536 4,268 2,134 1,067 3,202 1,601 4,804 2,402 1,201 3,604 1,802 901 2,704 1,352 676 338 169 508 254 127

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