521 × 1307

Prime Factor Structure

Factorization String 521 × 1307

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 682,776

Proper Divisor Sum 1,829

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #680929 ← → #680959

1 521 1,307 680,947

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

680,947 2,042,842 1,021,421 3,064,264 1,532,132 766,066 383,033 1,149,100 574,550 287,275 861,826 430,913 1,292,740 646,370 323,185 969,556 484,778 242,389 727,168 363,584 181,792 90,896 45,448 22,724 11,362 5,681 17,044 8,522 4,261 12,784 6,392 3,196 1,598 799 2,398 1,199 3,598 1,799 5,398 2,699 8,098 4,049 12,148 6,074 3,037 9,112 4,556 2,278 1,139 3,418 1,709 5,128 2,564 1,282 641 1,924 962 481 1,444 722

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