8,555,217

3 × 11 × 131 × 1979

8,555,217 factors as 3 × 11 × 131 × 1979. Its 16 positive divisors give a proper-divisor sum of 3,990,063, so this integer is deficient. The Collatz stopping time is 137 steps.

Prime Factor Structure

Factorization String 3 × 11 × 131 × 1979

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 12,545,280

Proper Divisor Sum 3,990,063

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #8555191 ← → #8555221

Radix Representation

Decimal	8555217
Binary	100000101000101011010001 (24 bits)
Octal	0o40505321
Hexadecimal	0x828AD1

Divisor Catalog (16)

1 3 11 33 131 393 1,441 1,979 4,323 5,937 21,769 65,307 259,249 777,747 2,851,739 8,555,217

Collatz Trajectory (137 steps to reach 1)

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

8,555,217 25,665,652 12,832,826 6,416,413 19,249,240 9,624,620 4,812,310 2,406,155 7,218,466 3,609,233 10,827,700 5,413,850 2,706,925 8,120,776 4,060,388 2,030,194 1,015,097 3,045,292 1,522,646 761,323 2,283,970 1,141,985 3,425,956 1,712,978 856,489 2,569,468 1,284,734 642,367 1,927,102 963,551 2,890,654 1,445,327 4,335,982 2,167,991 6,503,974 3,251,987 9,755,962 4,877,981 14,633,944 7,316,972 3,658,486 1,829,243 5,487,730 2,743,865 8,231,596 4,115,798 2,057,899 6,173,698 3,086,849 9,260,548 4,630,274 2,315,137 6,945,412 3,472,706 1,736,353 5,209,060 2,604,530 1,302,265 3,906,796 1,953,398

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