218,075

5² × 11 × 13 × 61

Prime Factor Structure

Factorization String 5^2 × 11 × 13 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 24

Divisor Sum (σ) 322,896

Proper Divisor Sum 104,821

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #218069 ← → #218077

1 5 11 13 25 55 61 65 143 275 305 325 671 715 793 1,525 3,355 3,575 3,965 8,723 16,775 19,825 43,615 218,075

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

218,075 654,226 327,113 981,340 490,670 245,335 736,006 368,003 1,104,010 552,005 1,656,016 828,008 414,004 207,002 103,501 310,504 155,252 77,626 38,813 116,440 58,220 29,110 14,555 43,666 21,833 65,500 32,750 16,375 49,126 24,563 73,690 36,845 110,536 55,268 27,634 13,817 41,452 20,726 10,363 31,090 15,545 46,636 23,318 11,659 34,978 17,489 52,468 26,234 13,117 39,352 19,676 9,838 4,919 14,758 7,379 22,138 11,069 33,208 16,604 8,302

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