13 × 1571

Prime Factor Structure

Factorization String 13 × 1571

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 22,008

Proper Divisor Sum 1,585

Digit Sum / Digital Root 11 (Root: 2)

Adjacent Primes #20411 ← → #20431

1 13 1,571 20,423

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

20,423 61,270 30,635 91,906 45,953 137,860 68,930 34,465 103,396 51,698 25,849 77,548 38,774 19,387 58,162 29,081 87,244 43,622 21,811 65,434 32,717 98,152 49,076 24,538 12,269 36,808 18,404 9,202 4,601 13,804 6,902 3,451 10,354 5,177 15,532 7,766 3,883 11,650 5,825 17,476 8,738 4,369 13,108 6,554 3,277 9,832 4,916 2,458 1,229 3,688 1,844 922 461 1,384 692 346 173 520 260 130

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