λ
Sequence Observatory

660,377

660377
Deficient Odd Prime

Starting at 660,377, the Collatz iteration reaches 1 after 185 steps. The first transition is 1981132; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 660377
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 660,378
Proper Divisor Sum 1
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #660367 ← → #660379

Radix Representation

Decimal 660377
Binary 10100001001110011001 (20 bits)
Octal 0o2411631
Hexadecimal 0xA1399

Divisor Catalog (2)

Collatz Trajectory (185 steps to reach 1)

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

660,377 1,981,132 990,566 495,283 1,485,850 742,925 2,228,776 1,114,388 557,194 278,597 835,792 417,896 208,948 104,474 52,237 156,712 78,356 39,178 19,589 58,768 29,384 14,692 7,346 3,673 11,020 5,510 2,755 8,266 4,133 12,400 6,200 3,100 1,550 775 2,326 1,163 3,490 1,745 5,236 2,618 1,309 3,928 1,964 982 491 1,474 737 2,212 1,106 553 1,660 830 415 1,246 623 1,870 935 2,806 1,403 4,210

More profiles

← Previous Integer #660,376 Browse Full Index Next Integer #660,378 →