3 × 13 × 521

Prime Factor Structure

Factorization String 3 × 13 × 521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 29,232

Proper Divisor Sum 8,913

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #20297 ← → #20323

1 3 13 39 521 1,563 6,773 20,319

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

20,319 60,958 30,479 91,438 45,719 137,158 68,579 205,738 102,869 308,608 154,304 77,152 38,576 19,288 9,644 4,822 2,411 7,234 3,617 10,852 5,426 2,713 8,140 4,070 2,035 6,106 3,053 9,160 4,580 2,290 1,145 3,436 1,718 859 2,578 1,289 3,868 1,934 967 2,902 1,451 4,354 2,177 6,532 3,266 1,633 4,900 2,450 1,225 3,676 1,838 919 2,758 1,379 4,138 2,069 6,208 3,104 1,552 776

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