2 × 43 × 137 × 139

Prime Factor Structure

Factorization String 2 × 43 × 137 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,550,240

Proper Divisor Sum 912,542

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #1637693 ← → #1637707

1 2 43 86 137 139 274 278 5,891 5,977 11,782 11,954 19,043 38,086 818,849 1,637,698

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

1,637,698 818,849 2,456,548 1,228,274 614,137 1,842,412 921,206 460,603 1,381,810 690,905 2,072,716 1,036,358 518,179 1,554,538 777,269 2,331,808 1,165,904 582,952 291,476 145,738 72,869 218,608 109,304 54,652 27,326 13,663 40,990 20,495 61,486 30,743 92,230 46,115 138,346 69,173 207,520 103,760 51,880 25,940 12,970 6,485 19,456 9,728 4,864 2,432 1,216 608 304 152 76 38 19 58 29 88 44 22 11 34 17 52

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