λ
Math Directory

1,298,639

1109 × 1171
Deficient Odd Composite

1,298,639 factors as 1109 × 1171. Its 4 positive divisors give a proper-divisor sum of 2,281, so this integer is deficient. The Collatz stopping time is 173 steps.

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Prime Factor Structure

Factorization String 1109 × 1171
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,300,920
Proper Divisor Sum 2,281
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #1298617 ← → #1298641

Radix Representation

Decimal 1298639
Binary 100111101000011001111 (21 bits)
Octal 0o4750317
Hexadecimal 0x13D0CF

Divisor Catalog (4)

1 1,109 1,171 1,298,639

Collatz Trajectory (173 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

1,298,639 3,895,918 1,947,959 5,843,878 2,921,939

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