13 × 53 × 313

Prime Factor Structure

Factorization String 13 × 53 × 313

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 237,384

Proper Divisor Sum 21,727

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #215653 ← → #215659

1 13 53 313 689 4,069 16,589 215,657

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

215,657 646,972 323,486 161,743 485,230 242,615 727,846 363,923 1,091,770 545,885 1,637,656 818,828 409,414 204,707 614,122 307,061 921,184 460,592 230,296 115,148 57,574 28,787 86,362 43,181 129,544 64,772 32,386 16,193 48,580 24,290 12,145 36,436 18,218 9,109 27,328 13,664 6,832 3,416 1,708 854 427 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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