13 × 47 × 353

Prime Factor Structure

Factorization String 13 × 47 × 353

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 237,888

Proper Divisor Sum 22,205

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #215681 ← → #215687

1 13 47 353 611 4,589 16,591 215,683

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

215,683 647,050 323,525 970,576 485,288 242,644 121,322 60,661 181,984 90,992 45,496 22,748 11,374 5,687 17,062 8,531 25,594 12,797 38,392 19,196 9,598 4,799 14,398 7,199 21,598 10,799 32,398 16,199 48,598 24,299 72,898 36,449 109,348 54,674 27,337 82,012 41,006 20,503 61,510 30,755 92,266 46,133 138,400 69,200 34,600 17,300 8,650 4,325 12,976 6,488 3,244 1,622 811 2,434 1,217 3,652 1,826 913 2,740 1,370

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