218521

Prime Factor Structure

Factorization String 218521

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 218,522

Proper Divisor Sum 1

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #218513 ← → #218527

1 218,521

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

218,521 655,564 327,782 163,891 491,674 245,837 737,512 368,756 184,378 92,189 276,568 138,284 69,142 34,571 103,714 51,857 155,572 77,786 38,893 116,680 58,340 29,170 14,585 43,756 21,878 10,939 32,818 16,409 49,228 24,614 12,307 36,922 18,461 55,384 27,692 13,846 6,923 20,770 10,385 31,156 15,578 7,789 23,368 11,684 5,842 2,921 8,764 4,382 2,191 6,574 3,287 9,862 4,931 14,794 7,397 22,192 11,096 5,548 2,774 1,387

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