7 × 13 × 41 × 521

Prime Factor Structure

Factorization String 7 × 13 × 41 × 521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,455,488

Proper Divisor Sum 511,637

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #1943839 ← → #1943857

1 7 13 41 91 287 521 533 3,647 3,731 6,773 21,361 47,411 149,527 277,693 1,943,851

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

1,943,851 5,831,554 2,915,777 8,747,332 4,373,666 2,186,833 6,560,500 3,280,250 1,640,125 4,920,376 2,460,188 1,230,094 615,047 1,845,142 922,571 2,767,714 1,383,857 4,151,572 2,075,786 1,037,893 3,113,680 1,556,840 778,420 389,210 194,605 583,816 291,908 145,954 72,977 218,932 109,466 54,733 164,200 82,100 41,050 20,525 61,576 30,788 15,394 7,697 23,092 11,546 5,773 17,320 8,660 4,330 2,165 6,496 3,248 1,624 812 406 203 610 305 916 458 229 688 344

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