2 × 13² × 29 × 37 × 59

Prime Factor Structure

Factorization String 2 × 13^2 × 29 × 37 × 59

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 37,551,600

Proper Divisor Sum 16,153,834

Digit Sum / Digital Root 41 (Root: 5)

Adjacent Primes #21397711 ← → #21397769

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

21,397,766 10,698,883 32,096,650 16,048,325 48,144,976 24,072,488 12,036,244 6,018,122 3,009,061 9,027,184 4,513,592 2,256,796 1,128,398 564,199 1,692,598 846,299 2,538,898 1,269,449 3,808,348 1,904,174 952,087 2,856,262 1,428,131 4,284,394 2,142,197 6,426,592 3,213,296 1,606,648 803,324 401,662 200,831 602,494 301,247 903,742 451,871 1,355,614 677,807 2,033,422 1,016,711 3,050,134 1,525,067 4,575,202 2,287,601 6,862,804 3,431,402 1,715,701 5,147,104 2,573,552 1,286,776 643,388 321,694 160,847 482,542 241,271 723,814 361,907 1,085,722 542,861 1,628,584 814,292

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