3 × 5 × 257 × 523

Prime Factor Structure

Factorization String 3 × 5 × 257 × 523

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,244,608

Proper Divisor Sum 1,228,443

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #2016139 ← → #2016181

1 3 5 15 257 523 771 1,285 1,569 2,615 3,855 7,845 134,411 403,233 672,055 2,016,165

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

2,016,165 6,048,496 3,024,248 1,512,124 756,062 378,031 1,134,094 567,047 1,701,142 850,571 2,551,714 1,275,857 3,827,572 1,913,786 956,893 2,870,680 1,435,340 717,670 358,835 1,076,506 538,253 1,614,760 807,380 403,690 201,845 605,536 302,768 151,384 75,692 37,846 18,923 56,770 28,385 85,156 42,578 21,289 63,868 31,934 15,967 47,902 23,951 71,854 35,927 107,782 53,891 161,674 80,837 242,512 121,256 60,628 30,314 15,157 45,472 22,736 11,368 5,684 2,842 1,421 4,264 2,132

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