2 × 19991

Prime Factor Structure

Factorization String 2 × 19991

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 59,976

Proper Divisor Sum 19,994

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #39979 ← → #39983

1 2 19,991 39,982

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

39,982 19,991 59,974 29,987 89,962 44,981 134,944 67,472 33,736 16,868 8,434 4,217 12,652 6,326 3,163 9,490 4,745 14,236 7,118 3,559 10,678 5,339 16,018 8,009 24,028 12,014 6,007 18,022 9,011 27,034 13,517 40,552 20,276 10,138 5,069 15,208 7,604 3,802 1,901 5,704 2,852 1,426 713 2,140 1,070 535 1,606 803 2,410 1,205 3,616 1,808 904 452 226 113 340 170 85 256

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