3 × 7 × 640621

Prime Factor Structure

Factorization String 3 × 7 × 640621

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 20,499,904

Proper Divisor Sum 7,046,863

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #13453021 ← → #13453049

1 3 7 21 640,621 1,921,863 4,484,347 13,453,041

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

13,453,041 40,359,124 20,179,562 10,089,781 30,269,344 15,134,672 7,567,336 3,783,668 1,891,834 945,917 2,837,752 1,418,876 709,438 354,719 1,064,158 532,079 1,596,238 798,119 2,394,358 1,197,179 3,591,538 1,795,769 5,387,308 2,693,654 1,346,827 4,040,482 2,020,241 6,060,724 3,030,362 1,515,181 4,545,544 2,272,772 1,136,386 568,193 1,704,580 852,290 426,145 1,278,436 639,218 319,609 958,828 479,414 239,707 719,122 359,561 1,078,684 539,342 269,671 809,014 404,507 1,213,522 606,761 1,820,284 910,142 455,071 1,365,214 682,607 2,047,822 1,023,911 3,071,734

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