5 × 17² × 19²

Prime Factor Structure

Factorization String 5 × 17^2 × 19^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 701,802

Proper Divisor Sum 180,157

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #521641 ← → #521657

1 5 17 19 85 95 289 323 361 1,445 1,615 1,805 5,491 6,137 27,455 30,685 104,329 521,645

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

521,645 1,564,936 782,468 391,234 195,617 586,852 293,426 146,713 440,140 220,070 110,035 330,106 165,053 495,160 247,580 123,790 61,895 185,686 92,843 278,530 139,265 417,796 208,898 104,449 313,348 156,674 78,337 235,012 117,506 58,753 176,260 88,130 44,065 132,196 66,098 33,049 99,148 49,574 24,787 74,362 37,181 111,544 55,772 27,886 13,943 41,830 20,915 62,746 31,373 94,120 47,060 23,530 11,765 35,296 17,648 8,824 4,412 2,206 1,103 3,310

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