3 × 7 × 139 × 211

Prime Factor Structure

Factorization String 3 × 7 × 139 × 211

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 949,760

Proper Divisor Sum 333,851

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #615907 ← → #615919

1 3 7 21 139 211 417 633 973 1,477 2,919 4,431 29,329 87,987 205,303 615,909

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

615,909 1,847,728 923,864 461,932 230,966 115,483 346,450 173,225 519,676 259,838 129,919 389,758 194,879 584,638 292,319 876,958 438,479 1,315,438 657,719 1,973,158 986,579 2,959,738 1,479,869 4,439,608 2,219,804 1,109,902 554,951 1,664,854 832,427 2,497,282 1,248,641 3,745,924 1,872,962 936,481 2,809,444 1,404,722 702,361 2,107,084 1,053,542 526,771 1,580,314 790,157 2,370,472 1,185,236 592,618 296,309 888,928 444,464 222,232 111,116 55,558 27,779 83,338 41,669 125,008 62,504 31,252 15,626 7,813 23,440

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