2 × 5 × 7 × 9721

Prime Factor Structure

Factorization String 2 × 5 × 7 × 9721

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,399,968

Proper Divisor Sum 719,498

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #680453 ← → #680489

1 2 5 7 10 14 35 70 9,721 19,442 48,605 68,047 97,210 136,094 340,235 680,470

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

680,470 340,235 1,020,706 510,353 1,531,060 765,530 382,765 1,148,296 574,148 287,074 143,537 430,612 215,306 107,653 322,960 161,480 80,740 40,370 20,185 60,556 30,278 15,139 45,418 22,709 68,128 34,064 17,032 8,516 4,258 2,129 6,388 3,194 1,597 4,792 2,396 1,198 599 1,798 899 2,698 1,349 4,048 2,024 1,012 506 253 760 380 190 95 286 143 430 215 646 323 970 485 1,456 728

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