7 × 13 × 313 × 631

Prime Factor Structure

Factorization String 7 × 13 × 313 × 631

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 22,226,176

Proper Divisor Sum 4,253,403

Digit Sum / Digital Root 43 (Root: 7)

Adjacent Primes #17972771 ← → #17972783

1 7 13 91 313 631 2,191 4,069 4,417 8,203 28,483 57,421 197,503 1,382,521 2,567,539 17,972,773

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

17,972,773 53,918,320 26,959,160 13,479,580 6,739,790 3,369,895 10,109,686 5,054,843 15,164,530 7,582,265 22,746,796 11,373,398 5,686,699 17,060,098 8,530,049 25,590,148 12,795,074 6,397,537 19,192,612 9,596,306 4,798,153 14,394,460 7,197,230 3,598,615 10,795,846 5,397,923 16,193,770 8,096,885 24,290,656 12,145,328 6,072,664 3,036,332 1,518,166 759,083 2,277,250 1,138,625 3,415,876 1,707,938 853,969 2,561,908 1,280,954 640,477 1,921,432 960,716 480,358 240,179 720,538 360,269 1,080,808 540,404 270,202 135,101 405,304 202,652 101,326 50,663 151,990 75,995 227,986 113,993

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