λ
Sequence Observatory

3,280,664

23 × 127 × 3229
Deficient Even Composite

Starting at 3,280,664, the Collatz iteration reaches 1 after 177 steps. The first transition is 1640332; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 127 × 3229
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 6,201,600
Proper Divisor Sum 2,920,936
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #3280663 ← → #3280681

Radix Representation

Decimal 3280664
Binary 1100100000111100011000 (22 bits)
Octal 0o14407430
Hexadecimal 0x320F18

Divisor Catalog (16)

1 2 4 8 127 254 508 1,016 3,229 6,458 12,916 25,832 410,083 820,166 1,640,332 3,280,664

Collatz Trajectory (177 steps to reach 1)

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

3,280,664 1,640,332 820,166 410,083 1,230,250 615,125 1,845,376 922,688 461,344 230,672 115,336 57,668 28,834 14,417 43,252 21,626 10,813 32,440 16,220 8,110 4,055 12,166 6,083 18,250 9,125 27,376 13,688 6,844 3,422 1,711 5,134 2,567 7,702 3,851 11,554 5,777 17,332 8,666 4,333 13,000 6,500 3,250 1,625 4,876 2,438 1,219 3,658 1,829 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320 1,160 580

More profiles

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